构建产出的镜像较大,改如何排查?
通过 docker history 命令,查看镜像个构建历史。
示例如下,我们发现导致镜像增大的指令:
# docker history 0xa0000/proxy_exporter:0.0.5 IMAGE CREATED CREATED BY SIZE COMMENT 6e5fb0db3577 4 hours ago /bin/sh -c #(nop) CMD ["/bin/sh" "-c" "\"py… 0B 40a3b4bd0dc9 4 hours ago /bin/sh -c #(nop) ENV PORT=1923 0B f926695ca75f 4 hours ago /bin/sh -c pip3 install -r requirements.txt 7.08MB 006c03ee97e5 4 hours ago /bin/sh -c #(nop) ADD multi:d3ed25191265c52e… 19.1kB a9c8c4ce9fcf 4 hours ago /bin/sh -c #(nop) ADD file:6eade3ef219d74a8b… 14.2MB 8a7453e4653c 4 hours ago /bin/sh -c apt-get update && apt-get install… 403MB b96ea74726a8 4 hours ago /bin/sh -c #(nop) WORKDIR /config 0B 56def654ec22 7 weeks ago /bin/sh -c #(nop) CMD ["/bin/bash"] 0B <missing> 7 weeks ago /bin/sh -c mkdir -p /run/systemd && echo 'do… 7B <missing> 7 weeks ago /bin/sh -c [ -z "$(apt-get indextargets)" ] 0B <missing> 7 weeks ago /bin/sh -c set -xe && echo '#!/bin/sh' > /… 745B <missing> 7 weeks ago /bin/sh -c #(nop) ADD file:4974bb5483c392fb5… 63.2MB
构建更小的镜像
选择更小的基础镜像
for Java
- OpenJDK 镜像,最小 200M+ 空间。
- application.jar 文件,占用 200M+ 空间。