dockerfile echo指定文件多行文本的方法实现

在dockerfile中给指定文件添加多行，注意echo后面的"$"符号

[root@master01 ovn-node]# cat dockerfile FROM ovn-node:2.11.2# sed 删除指定行RUN sed -i '53d' /root/start-ovs.sh# 用echo添加多行内容RUN echo $'OVERLAY_ENDPOINT=`hostname -i`\n\ovs-vsctl set open . external-ids:ovn-encap-ip=${OVERLAY_ENDPOINT}\n\\n\# create a bridge , then mapping outside port\n\ovs-vsctl add-br br-ex\n\ovs-vsctl set Open_vSwitch . external-ids:ovn-bridge-mappings=phyNet:br-ex\n\\n\# add nicovs-vsctl add-port br-ex ${OVN_PHYNET_NIC}\n\\n\tail -f /var/log/openvswitch/ovs-vswitchd.log\n'\>> /root/start-ovs.shCMD ["/bin/bash","/root/start-ovs.sh"]

结果： 注意多行文本中"#" 注释行，并没有输入到指定文件中

[root@master01 ovn-node]# cat /root/start-ovs.sh# Set remote ovn-sb for ovn-controller to connect toovs-vsctl set open . external-ids:ovn-remote=tcp:${OVN_SB_SERVICE_HOST}:${OVN_SB_SERVICE_PORT}ovs-vsctl set open . external-ids:ovn-encap-type=geneveOVERLAY_ENDPOINT=`hostname -i`ovs-vsctl set open . external-ids:ovn-encap-ip=${OVERLAY_ENDPOINT}ovs-vsctl add-br br-exovs-vsctl set Open_vSwitch . external-ids:ovn-bridge-mappings=phyNet:br-exovs-vsctl add-port br-ex ${OVN_PHYNET_NIC}tail -f /var/log/openvswitch/ovs-vswitchd.log

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