怎么在alpine中使用dockerfile创建tomcat镜像

怎么在alpine中使用dockerfile创建tomcat镜像？针对这个问题，这篇文章详细介绍了相对应的分析和解答，希望可以帮助更多想解决这个问题的小伙伴找到更简单易行的方法。

1、下载alpine镜像

[root@docker43 ~]# docker pull alpineUsing default tag: latestTrying to pull repository docker.io/library/alpine ...latest: Pulling from docker.io/library/alpine4fe2ade4980c: Pull completeDigest: sha256:621c2f39f8133acb8e64023a94dbdf0d5ca81896102b9e57c0dc184cadaf5528Status: Downloaded newer image for docker.io/alpine:latest[root@docker43 ~]# docker imagesREPOSITORY TAG IMAGE ID CREATED SIZEdocker.io/alpine latest 196d12cf6ab1 3 weeks ago 4.41 MB

2、通过dockerfile构建镜像

在其他的资料中很多都是下载包然后在dockerfile 使用COPY进行拷贝，这里我就不这样做了，我们分开写(都是通过dockerfile进行构建镜像)

2.1.构建jdk镜像

创建jdk目录

[root@docker43 ~]# cd /opt/[root@docker43 opt]# mkdir -p alpine_jre && cd alpine_jre && touch Dockerfile[root@docker43 alpine_jre]# ll总用量 0-rw-r--r-- 1 root root 0 10月 6 17:39 Dockerfile

编写dockerfile文件

# 基础镜像FROM alpine # 作者信息MAINTAINER JRE Docker Maintainers "1024331014@qq.com" # 修改源RUN echo "http://mirrors.aliyun.com/alpine/latest-stable/main/" > /etc/apk/repositories && \  echo "http://mirrors.aliyun.com/alpine/latest-stable/community/" >> /etc/apk/repositories # 安装需要的软件RUN apk update && \  apk add --no-cache ca-certificates && \  apk add --no-cache curl bash tree tzdata && \  cp -rf /usr/share/zoneinfo/Asia/Shanghai /etc/localtime # 定义环境变量ENV PATH /usr/local/bin:${PATH} # 安装JRERUN apk add --nocache openjdk8-jre-base && \  rm -rf /var/cache/apk/* RUN { \    echo '#!/bin/sh'; \    echo 'set -e'; \    echo; \    echo 'dirname "$(dirname "$(readlink -f "$(which javac || which java)")")"'; \   } > /usr/local/bin/docker-java-home \  && chmod +x /usr/local/bin/docker-java-home ENV JAVA_HOME /usr/lib/jvm/default-jvmENV PATH ${PATH}:${JAVA_HOME}/bin:${JAVA_HOME}/jre/binENV JAVA_VERSION 8u71ENV JAVA_ALPINE_VERSION 8.171.11-r0RUN set -x \  \  && apk add --no-cache \  \  openjdk8-jre="$JAVA_ALPINE_VERSION"

创建镜像

[root@docker43 alpine_jre]# docker build -t alpine_jre .

查看镜像

[root@docker43 alpine_jre]# docker imagesREPOSITORY     TAG         IMAGE ID      CREATED       SIZEalpine_jre     latest       614bc57ab66e    33 seconds ago   91.1 MBdocker.io/alpine  latest       196d12cf6ab1    3 weeks ago     4.41 MB

2.2.构建tomcat镜像

创建tomcat目录

[root@docker43 ~]# cd /opt/[root@docker43 opt]# mkdir -p jre_tomcat && cd jre_tomcat && touch Dockerfile[root@docker43 jre_tomcat]# ll总用量 0-rw-r--r-- 1 root root 0 10月 6 17:46 Dockerfile

编写dockerfile(基于上面的alpine_jre镜像)

#基础镜像FROM alpine_jre # 作者信息MAINTAINER tomcat Docker Maintainers "1024331014@qq.com" # 定义tomcat变量(如果有其他的可以在这里加)ENV CATALINA_HOME /usr/local/tomcatENV PATH $CATALINA_HOME/bin:$PATHRUN mkdir -p "$CATALINA_HOME"WORKDIR $CATALINA_HOME # let "Tomcat Native" live somewhere isolatedENV TOMCAT_NATIVE_LIBDIR $CATALINA_HOME/native-jni-libENV LD_LIBRARY_PATH ${LD_LIBRARY_PATH:+$LD_LIBRARY_PATH:}$TOMCAT_NATIVE_LIBDIR RUN apk add --no-cache gnupg # see http://archive.apache.org/dist/tomcat/tomcat-$TOMCAT_MAJOR/KEYS# see also "update.sh" (https://github.com/docker-library/tomcat/blob/master/update.sh)ENV GPG_KEYS 05AB33110949707C93A279E3D3EFE6B686867BA6 07E48665A34DCAFAE522E5E6266191C37C037D42 47309207D818FFD8DCD3F83F1931D684307A10A5 541FBE7D8F78B25E055DDEE13C370389288584E7 61B832AC2F1C5A90F0F9B00A1C506407564C17A3 713DA88BE50911535FE716F5208B0AB1D63011C7 79F7026C690BAA50B92CD8B66A3AD3F4F22C4FED 9BA44C2621385CB966EBA586F72C284D731FABEE A27677289986DB50844682F8ACB77FC2E86E29AC A9C5DF4D22E99998D9875A5110C01C5A2F6059E7 DCFD35E0BF8CA7344752DE8B6FB21E8933C60243 F3A04C595DB5B6A5F1ECA43E3B7BBB100D811BBE F7DA48BB64BCB84ECBA7EE6935CD23C10D498E23RUN set -ex; \    for key in $GPG_KEYS; do \        gpg --keyserver ha.pool.sks-keyservers.net --recv-keys "$key"; \    done # 定义tomcat版本ENV TOMCAT_MAJOR 8ENV TOMCAT_VERSION 8.0.53 # 下载# https://issues.apache.org/jira/browse/INFRA-8753?focusedCommentId=14735394#comment-14735394ENV TOMCAT_TGZ_URL https://www.apache.org/dyn/closer.cgi?action=download&filename=tomcat/tomcat-$TOMCAT_MAJOR/v$TOMCAT_VERSION/bin/apache-tomcat-$TOMCAT_VERSION.tar.gz# not all the mirrors actually carry the .asc files :'(ENV TOMCAT_ASC_URL http://archive.apache.org/dist/tomcat/tomcat-$TOMCAT_MAJOR/v$TOMCAT_VERSION/bin/apache-tomcat-$TOMCAT_VERSION.tar.gz.asc # 安装RUN set -x \    \    && apk add --no-cache --virtual .fetch-deps \        ca-certificates \        tar \        openssl \    && wget -O tomcat.tar.gz "$TOMCAT_TGZ_URL" \    && wget -O tomcat.tar.gz.asc "$TOMCAT_ASC_URL" \    && gpg --batch --verify tomcat.tar.gz.asc tomcat.tar.gz \    && tar -xvf tomcat.tar.gz --strip-components=1 \    && rm bin/*.bat \    && rm tomcat.tar.gz* \    \    && nativeBuildDir="$(mktemp -d)" \    && tar -xvf bin/tomcat-native.tar.gz -C "$nativeBuildDir" --strip-components=1 \    && apk add --no-cache --virtual .native-build-deps \        apr-dev \        dpkg-dev dpkg \        gcc \        libc-dev \        make \        "openjdk${JAVA_VERSION%%[-~bu]*}"="$JAVA_ALPINE_VERSION" \        openssl-dev \    && ( \        export CATALINA_HOME="$PWD" \        && cd "$nativeBuildDir/native" \        && gnuArch="$(dpkg-architecture --query DEB_BUILD_GNU_TYPE)" \        && ./configure \            --build="$gnuArch" \            --libdir="$TOMCAT_NATIVE_LIBDIR" \            --prefix="$CATALINA_HOME" \            --with-apr="$(which apr-1-config)" \            --with-java-home="$(docker-java-home)" \            --with-ssl=yes \        && make -j$(getconf _NPROCESSORS_ONLN) \        && make install \    ) \    && runDeps="$( \        scanelf --needed --nobanner --recursive "$TOMCAT_NATIVE_LIBDIR" \            | awk '{ gsub(/,/, "\nso:", $2); print "so:" $2 }' \            | sort -u \            | xargs -r apk info --installed \            | sort -u \    )" \    && apk add --virtual .tomcat-native-rundeps $runDeps \    && apk del .fetch-deps .native-build-deps \    && rm -rf "$nativeBuildDir" \    && rm bin/tomcat-native.tar.gz # verify Tomcat Native is working properlyRUN set -e \    && nativeLines="$(catalina.sh configtest 2>&1)" \    && nativeLines="$(echo "$nativeLines" | grep 'Apache Tomcat Native')" \    && nativeLines="$(echo "$nativeLines" | sort -u)" \    && if ! echo "$nativeLines" | grep 'INFO: Loaded APR based Apache Tomcat Native library' >&2; then \        echo >&2 "$nativeLines"; \        exit 1; \    fi # 开发8080端口EXPOSE 8080# 执行命令CMD ["catalina.sh", "run"]

创建镜像

[root@docker43 jre_tomcat]# docker build -t tomcat:1.0 .

查看镜像

[root@docker43 jre_tomcat]# docker imagesREPOSITORY     TAG         IMAGE ID      CREATED       SIZEtomcat       1.0         64c9cec4375d    7 seconds ago    124 MBalpine_jre     latest       614bc57ab66e    8 minutes ago    91.1 MBdocker.io/alpine  latest       196d12cf6ab1    3 weeks ago     4.41 MB

2.3.构建tomcat_web镜像

创建tomcat_web目录(包含Dockerfile和启动文件)

[root@docker43 ~]# cd /opt/[root@docker43 opt]# mkdir tomcat_web && cd tomcat_web && touch Dockerfile && touch start.sh[root@docker43 tomcat_web]# ll总用量 0-rw-r--r-- 1 root root 0 10月 6 17:53 Dockerfile-rw-r--r-- 1 root root 0 10月 6 17:53 start.sh

编写start.sh启动脚本

#!/bin/sh# Licensed to the Apache Software Foundation (ASF) under one or more# contributor license agreements. See the NOTICE file distributed with# this work for additional information regarding copyright ownership.# The ASF licenses this file to You under the Apache License, Version 2.0# (the "License"); you may not use this file except in compliance with# the License. You may obtain a copy of the License at##   http://www.apache.org/licenses/LICENSE-2.0## Unless required by applicable law or agreed to in writing, software# distributed under the License is distributed on an "AS IS" BASIS,# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.# See the License for the specific language governing permissions and# limitations under the License. # -----------------------------------------------------------------------------# Control Script for the CATALINA Server## Environment Variable Prerequisites##  Do not set the variables in this script. Instead put them into a script#  setenv.sh in CATALINA_BASE/bin to keep your customizations separate.##  CATALINA_HOME  May point at your Catalina "build" directory.##  CATALINA_BASE  (Optional) Base directory for resolving dynamic portions#          of a Catalina installation. If not present, resolves to#          the same directory that CATALINA_HOME points to.##  CATALINA_OUT  (Optional) Full path to a file where stdout and stderr#          will be redirected.#          Default is $CATALINA_BASE/logs/catalina.out##  CATALINA_OPTS  (Optional) Java runtime options used when the "start",#          "run" or "debug" command is executed.#          Include here and not in JAVA_OPTS all options, that should#          only be used by Tomcat itself, not by the stop process,#          the version command etc.#          Examples are heap size, GC logging, JMX ports etc.##  CATALINA_TMPDIR (Optional) Directory path location of temporary directory#          the JVM should use (java.io.tmpdir). Defaults to#          $CATALINA_BASE/temp.##  JAVA_HOME    Must point at your Java Development Kit installation.#          Required to run the with the "debug" argument.##  JRE_HOME    Must point at your Java Runtime installation.#          Defaults to JAVA_HOME if empty. If JRE_HOME and JAVA_HOME#          are both set, JRE_HOME is used.##  JAVA_OPTS    (Optional) Java runtime options used when any command#          is executed.#          Include here and not in CATALINA_OPTS all options, that#          should be used by Tomcat and also by the stop process,#          the version command etc.#          Most options should go into CATALINA_OPTS.##  JAVA_ENDORSED_DIRS (Optional) Lists of of colon separated directories#          containing some jars in order to allow replacement of APIs#          created outside of the JCP (i.e. DOM and SAX from W3C).#          It can also be used to update the XML parser implementation.#          Defaults to $CATALINA_HOME/endorsed.##  JPDA_TRANSPORT (Optional) JPDA transport used when the "jpda start"#          command is executed. The default is "dt_socket".##  JPDA_ADDRESS  (Optional) Java runtime options used when the "jpda start"#          command is executed. The default is localhost:8000.##  JPDA_SUSPEND  (Optional) Java runtime options used when the "jpda start"#          command is executed. Specifies whether JVM should suspend#          execution immediately after startup. Default is "n".##  JPDA_OPTS    (Optional) Java runtime options used when the "jpda start"#          command is executed. If used, JPDA_TRANSPORT, JPDA_ADDRESS,#          and JPDA_SUSPEND are ignored. Thus, all required jpda#          options MUST be specified. The default is:##          -agentlib:jdwp=transport=$JPDA_TRANSPORT,#            address=$JPDA_ADDRESS,server=y,suspend=$JPDA_SUSPEND##  JSSE_OPTS    (Optional) Java runtime options used to control the TLS#          implementation when JSSE is used. Default is:#          "-Djdk.tls.ephemeralDHKeySize=2048"##  CATALINA_PID  (Optional) Path of the file which should contains the pid#          of the catalina startup java process, when start (fork) is#          used##  LOGGING_CONFIG (Optional) Override Tomcat's logging config file#          Example (all one line)#          LOGGING_CONFIG="-Djava.util.logging.config.file=$CATALINA_BASE/conf/logging.properties"##  LOGGING_MANAGER (Optional) Override Tomcat's logging manager#          Example (all one line)#          LOGGING_MANAGER="-Djava.util.logging.manager=org.apache.juli.ClassLoaderLogManager"##  USE_NOHUP    (Optional) If set to the string true the start command will#          use nohup so that the Tomcat process will ignore any hangup#          signals. Default is "false" unless running on HP-UX in which#          case the default is "true"# ----------------------------------------------------------------------------- # OS specific support. $var _must_ be set to either true or false.cygwin=falsedarwin=falseos400=falsehpux=falsecase "`uname`" inCYGWIN*) cygwin=true;;Darwin*) darwin=true;;OS400*) os400=true;;HP-UX*) hpux=true;;esac # resolve links - $0 may be a softlinkPRG="$0" while [ -h "$PRG" ]; do ls=`ls -ld "$PRG"` link=`expr "$ls" : '.*-> \(.*\)$'` if expr "$link" : '/.*' > /dev/null; then  PRG="$link" else  PRG=`dirname "$PRG"`/"$link" fidone # Get standard environment variablesPRGDIR=`dirname "$PRG"` # Only set CATALINA_HOME if not already set[ -z "$CATALINA_HOME" ] && CATALINA_HOME=`cd "$PRGDIR/.." >/dev/null; pwd` # Copy CATALINA_BASE from CATALINA_HOME if not already set[ -z "$CATALINA_BASE" ] && CATALINA_BASE="$CATALINA_HOME" # Ensure that any user defined CLASSPATH variables are not used on startup,# but allow them to be specified in setenv.sh, in rare case when it is needed.CLASSPATH= if [ -r "$CATALINA_BASE/bin/setenv.sh" ]; then . "$CATALINA_BASE/bin/setenv.sh"elif [ -r "$CATALINA_HOME/bin/setenv.sh" ]; then . "$CATALINA_HOME/bin/setenv.sh"fi # For Cygwin, ensure paths are in UNIX format before anything is touchedif $cygwin; then [ -n "$JAVA_HOME" ] && JAVA_HOME=`cygpath --unix "$JAVA_HOME"` [ -n "$JRE_HOME" ] && JRE_HOME=`cygpath --unix "$JRE_HOME"` [ -n "$CATALINA_HOME" ] && CATALINA_HOME=`cygpath --unix "$CATALINA_HOME"` [ -n "$CATALINA_BASE" ] && CATALINA_BASE=`cygpath --unix "$CATALINA_BASE"` [ -n "$CLASSPATH" ] && CLASSPATH=`cygpath --path --unix "$CLASSPATH"`fi # Ensure that neither CATALINA_HOME nor CATALINA_BASE contains a colon# as this is used as the separator in the classpath and Java provides no# mechanism for escaping if the same character appears in the path.case $CATALINA_HOME in *:*) echo "Using CATALINA_HOME:  $CATALINA_HOME";    echo "Unable to start as CATALINA_HOME contains a colon (:) character";    exit 1;esaccase $CATALINA_BASE in *:*) echo "Using CATALINA_BASE:  $CATALINA_BASE";    echo "Unable to start as CATALINA_BASE contains a colon (:) character";    exit 1;esac # For OS400if $os400; then # Set job priority to standard for interactive (interactive - 6) by using # the interactive priority - 6, the helper threads that respond to requests # will be running at the same priority as interactive jobs. COMMAND='chgjob job('$JOBNAME') runpty(6)' system $COMMAND  # Enable multi threading export QIBM_MULTI_THREADED=Yfi # Get standard Java environment variablesif $os400; then # -r will Only work on the os400 if the files are: # 1. owned by the user # 2. owned by the PRIMARY group of the user # this will not work if the user belongs in secondary groups . "$CATALINA_HOME"/bin/setclasspath.shelse if [ -r "$CATALINA_HOME"/bin/setclasspath.sh ]; then  . "$CATALINA_HOME"/bin/setclasspath.sh else  echo "Cannot find $CATALINA_HOME/bin/setclasspath.sh"  echo "This file is needed to run this program"  exit 1 fifi # Add on extra jar files to CLASSPATHif [ ! -z "$CLASSPATH" ] ; then CLASSPATH="$CLASSPATH":fiCLASSPATH="$CLASSPATH""$CATALINA_HOME"/bin/bootstrap.jar if [ -z "$CATALINA_OUT" ] ; then CATALINA_OUT="$CATALINA_BASE"/logs/catalina.outfi if [ -z "$CATALINA_TMPDIR" ] ; then # Define the java.io.tmpdir to use for Catalina CATALINA_TMPDIR="$CATALINA_BASE"/tempfi # Add tomcat-juli.jar to classpath# tomcat-juli.jar can be over-ridden per instanceif [ -r "$CATALINA_BASE/bin/tomcat-juli.jar" ] ; then CLASSPATH=$CLASSPATH:$CATALINA_BASE/bin/tomcat-juli.jarelse CLASSPATH=$CLASSPATH:$CATALINA_HOME/bin/tomcat-juli.jarfi # Bugzilla 37848: When no TTY is available, don't output to consolehave_tty=0if [ "`tty`" != "not a tty" ]; then  have_tty=1fi # For Cygwin, switch paths to Windows format before running javaif $cygwin; then JAVA_HOME=`cygpath --absolute --windows "$JAVA_HOME"` JRE_HOME=`cygpath --absolute --windows "$JRE_HOME"` CATALINA_HOME=`cygpath --absolute --windows "$CATALINA_HOME"` CATALINA_BASE=`cygpath --absolute --windows "$CATALINA_BASE"` CATALINA_TMPDIR=`cygpath --absolute --windows "$CATALINA_TMPDIR"` CLASSPATH=`cygpath --path --windows "$CLASSPATH"` JAVA_ENDORSED_DIRS=`cygpath --path --windows "$JAVA_ENDORSED_DIRS"`fi if [ -z "$JSSE_OPTS" ] ; then JSSE_OPTS="-Djdk.tls.ephemeralDHKeySize=2048"fiJAVA_OPTS="$JAVA_OPTS $JSSE_OPTS" # Register custom URL handlers# Do this here so custom URL handles (specifically 'war:...') can be used in the security policyJAVA_OPTS="$JAVA_OPTS -Djava.protocol.handler.pkgs=org.apache.catalina.webresources" # Set juli LogManager config file if it is present and an override has not been issuedif [ -z "$LOGGING_CONFIG" ]; then if [ -r "$CATALINA_BASE"/conf/logging.properties ]; then  LOGGING_CONFIG="-Djava.util.logging.config.file=$CATALINA_BASE/conf/logging.properties" else  # Bugzilla 45585  LOGGING_CONFIG="-Dnop" fifi if [ -z "$LOGGING_MANAGER" ]; then LOGGING_MANAGER="-Djava.util.logging.manager=org.apache.juli.ClassLoaderLogManager"fi # Uncomment the following line to make the umask available when using the# org.apache.catalina.security.SecurityListener#JAVA_OPTS="$JAVA_OPTS -Dorg.apache.catalina.security.SecurityListener.UMASK=`umask`" if [ -z "$USE_NOHUP" ]; then  if $hpux; then    USE_NOHUP="true"  else    USE_NOHUP="false"  fifiunset _NOHUPif [ "$USE_NOHUP" = "true" ]; then  _NOHUP=nohupfi # ----- Execute The Requested Command ----------------------------------------- # Bugzilla 37848: only output this if we have a TTYif [ $have_tty -eq 1 ]; then echo "Using CATALINA_BASE:  $CATALINA_BASE" echo "Using CATALINA_HOME:  $CATALINA_HOME" echo "Using CATALINA_TMPDIR: $CATALINA_TMPDIR" if [ "$1" = "debug" ] ; then  echo "Using JAVA_HOME:    $JAVA_HOME" else  echo "Using JRE_HOME:    $JRE_HOME" fi echo "Using CLASSPATH:    $CLASSPATH" if [ ! -z "$CATALINA_PID" ]; then  echo "Using CATALINA_PID:  $CATALINA_PID" fifi if [ "$1" = "jpda" ] ; then if [ -z "$JPDA_TRANSPORT" ]; then  JPDA_TRANSPORT="dt_socket" fi if [ -z "$JPDA_ADDRESS" ]; then  JPDA_ADDRESS="localhost:8000" fi if [ -z "$JPDA_SUSPEND" ]; then  JPDA_SUSPEND="n" fi if [ -z "$JPDA_OPTS" ]; then  JPDA_OPTS="-agentlib:jdwp=transport=$JPDA_TRANSPORT,address=$JPDA_ADDRESS,server=y,suspend=$JPDA_SUSPEND" fi CATALINA_OPTS="$JPDA_OPTS $CATALINA_OPTS" shiftfi if [ "$1" = "debug" ] ; then if $os400; then  echo "Debug command not available on OS400"  exit 1 else  shift  if [ "$1" = "-security" ] ; then   if [ $have_tty -eq 1 ]; then    echo "Using Security Manager"   fi   shift   exec "$_RUNJDB" "$LOGGING_CONFIG" $LOGGING_MANAGER $JAVA_OPTS $CATALINA_OPTS \    -Djava.endorsed.dirs="$JAVA_ENDORSED_DIRS" -classpath "$CLASSPATH" \    -sourcepath "$CATALINA_HOME"/../../java \    -Djava.security.manager \    -Djava.security.policy=="$CATALINA_BASE"/conf/catalina.policy \    -Dcatalina.base="$CATALINA_BASE" \    -Dcatalina.home="$CATALINA_HOME" \    -Djava.io.tmpdir="$CATALINA_TMPDIR" \    org.apache.catalina.startup.Bootstrap "$@" start  else   exec "$_RUNJDB" "$LOGGING_CONFIG" $LOGGING_MANAGER $JAVA_OPTS $CATALINA_OPTS \    -Djava.endorsed.dirs="$JAVA_ENDORSED_DIRS" -classpath "$CLASSPATH" \    -sourcepath "$CATALINA_HOME"/../../java \    -Dcatalina.base="$CATALINA_BASE" \    -Dcatalina.home="$CATALINA_HOME" \    -Djava.io.tmpdir="$CATALINA_TMPDIR" \    org.apache.catalina.startup.Bootstrap "$@" start  fi fi elif [ "$1" = "run" ]; then  shift if [ "$1" = "-security" ] ; then  if [ $have_tty -eq 1 ]; then   echo "Using Security Manager"  fi  shift  eval exec "\"$_RUNJAVA\"" "\"$LOGGING_CONFIG\"" $LOGGING_MANAGER $JAVA_OPTS $CATALINA_OPTS \   -Djava.endorsed.dirs="\"$JAVA_ENDORSED_DIRS\"" -classpath "\"$CLASSPATH\"" \   -Djava.security.manager \   -Djava.security.policy=="\"$CATALINA_BASE/conf/catalina.policy\"" \   -Dcatalina.base="\"$CATALINA_BASE\"" \   -Dcatalina.home="\"$CATALINA_HOME\"" \   -Djava.io.tmpdir="\"$CATALINA_TMPDIR\"" \   org.apache.catalina.startup.Bootstrap "$@" start else  eval exec "\"$_RUNJAVA\"" "\"$LOGGING_CONFIG\"" $LOGGING_MANAGER $JAVA_OPTS $CATALINA_OPTS \   -Djava.endorsed.dirs="\"$JAVA_ENDORSED_DIRS\"" -classpath "\"$CLASSPATH\"" \   -Dcatalina.base="\"$CATALINA_BASE\"" \   -Dcatalina.home="\"$CATALINA_HOME\"" \   -Djava.io.tmpdir="\"$CATALINA_TMPDIR\"" \   org.apache.catalina.startup.Bootstrap "$@" start \   >> "$CATALINA_OUT" 2>&1  fifi

编写dockerfile(基于上面的tomcat镜像)

# 基础镜像FROM tomcat:1.0 # 创建项目目录和日志目录，这个是要在宿主机-v挂载的RUN set -x \  &&mkdir -p /Webs/logs \  \  &&rm -rf /usr/local/tomcat/logs \  \  &&ln -sf /Webs/logs /usr/local/tomcat/logs # 将启动文件copy到容器COPY start.sh /usr/local/tomcat/bin/ # 给容器的启动脚本权限RUN chmod +x /usr/local/tomcat/bin/start.sh # 开放8080端口EXPOSE 8080 # 运行tomcatCMD ["start.sh","run"]

创建镜像

[root@docker43 tomcat_web]# docker build -t tomcat_web:v1 .

查看镜像

[root@docker43 tomcat_web]# docker imagesREPOSITORY     TAG         IMAGE ID      CREATED       SIZEtomcat_web     v1         b3651c50a7b5    26 seconds ago   124 MBtomcat       1.0         64c9cec4375d    6 minutes ago    124 MBalpine_jre     latest       614bc57ab66e    14 minutes ago   91.1 MBdocker.io/alpine  latest       196d12cf6ab1    3 weeks ago     4.41 MB

3、创建容器

创建项目目录

我们是基于tomcat_web镜像进行创建容器的

首先我先在宿主机上创建个项目的目录(server.xml的配置文件拷贝改路径就能用)

[root@docker43 ~]# cd /home/[root@docker43 home]# mkdir test.tomcat.com && cd test.tomcat.com[root@docker43 test.tomcat.com]# touch server.xml # 配置文件[root@docker43 test.tomcat.com]# mkdir logs    # 日志目录[root@docker43 test.tomcat.com]# mkdir wwwroot   # 项目主目录(要是修改了记得也在server.xml进行修改)[root@docker43 test.tomcat.com]# ll总用量 0drwxr-xr-x 2 root root 6 10月 6 18:03 logs-rw-r--r-- 1 root root 0 10月 6 18:02 server.xmldrwxr-xr-x 2 root root 6 10月 6 18:03 wwwroot

server.xml配置文件

编写测试页面

在wwwroot中编写个测试页面

[root@docker43 test.tomcat.com]# cd wwwroot/[root@docker43 wwwroot]# cat index.html

成功了

创建并启动容器

复制代码 代码如下:

docker run -tid --restart=always --name test.tomcat.com -p 5081:8080 -v /home/test.tomcat.com/:/Webs -m 2048m --memory-swap=2048m --cpu-shares=256 tomcat_web:v1 start.sh run -config /Webs/server.xml

查看容器

[root@docker43 test.tomcat.com]# docker psCONTAINER ID    IMAGE        COMMAND         CREATED       STATUS       PORTS          NAMESab62045e0688    tomcat_web:v1    "start.sh run -con..."  2 seconds ago    Up 1 second     0.0.0.0:5081->8080/tcp  test.tomcat.com

测试

[root@docker43 test.tomcat.com]# curl 127.0.0.1:5081成功了[root@docker43 test.tomcat.com]#

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