简介
制作docker镜像可以通过修改容器的方式，也通过通过Dockerfile文件的方式，下面通过Dockerfile文件的例子进行说明。
Dockerfile文件
FROM openjdk:8-alpine#ENV http_proxy http://127.0.0.1:7890
#ENV https_proxy http://127.0.0.1:7890#ENV TZ=Asia/Shanghai
#RUN set -eux; \
# ln -snf /usr/share/zoneinfo/$TZ /etc/localtime; \
# echo $TZ > /etc/timezone#RUN apk update \
# && apk upgrade \
# && apk add --no-cache bash \
# bash-doc \
# bash-completion \
# && rm -rf /var/cache/apk/* \
# && /bin/bash#RUN echo "https://mirror.tuna.tsinghua.edu.cn/alpine/v3.4/main/" > /etc/apk/repositories
RUN echo "http://mirrors.ustc.edu.cn/alpine/v3.4/main/" > /etc/apk/repositories
RUN cat /etc/apk/repositories# 容器内执行
#$RUN rm -fr /var/cache/apk
#RUN mkdir -p mkdir /var/cache/apkRUN rm -rf /var/cache/apk/* && \rm -rf /tmp/*RUN apk updateENV TZ=Asia/Shanghai
RUN set -eux; \apk add --no-cache tzdata; \ln -snf /usr/share/zoneinfo/$TZ /etc/localtime; \echo $TZ > /etc/timezone #RUN apk update \
# && DEBIAN_FRONTEND=noninteractive apt install -y tzdata \
# && rm -rf /var/lib/apt/lists/*RUN set -eux; \addgroup --gid 1000 java-app; \adduser -S -u 1000 -g java-app -h /home/java-app/ -s /bin/sh -D java-app;EXPOSE 8080COPY --chown=java-app firefly /home/java-app/fireflyADD docker-entrypoint.sh /home/java-app/firefly/docker-entrypoint.shRUN chown -R java-app:java-app /home/java-appUSER java-appWORKDIR /home/java-app/fireflyCMD /home/java-app/firefly/docker-entrypoint.sh精简的Dockerfile文件
FROM openjdk:8-alpineRUN echo "http://mirrors.ustc.edu.cn/alpine/v3.4/main/" > /etc/apk/repositories
RUN cat /etc/apk/repositoriesRUN rm -rf /var/cache/apk/* && \rm -rf /tmp/*RUN apk update -v
ENV TZ=Asia/Shanghai
RUN set -eux; \apk add --no-cache tzdata; \ln -snf /usr/share/zoneinfo/$TZ /etc/localtime; \echo $TZ > /etc/timezone RUN set -eux; \addgroup --gid 1000 java-app; \adduser -S -u 1000 -g java-app -h /home/java-app/ -s /bin/sh -D java-app;EXPOSE 8080COPY --chown=java-app firefly /home/java-app/fireflyADD docker-entrypoint.sh /home/java-app/firefly/docker-entrypoint.shRUN chown -R java-app:java-app /home/java-appUSER java-appWORKDIR /home/java-app/fireflyCMD /home/java-app/firefly/docker-entrypoint.sh制作镜像命令脚本
#!/bin/bashimage=harbor.k8s/firefly/firefly-spring-boot-starter:1.2.0#docker build -t $image ./ --build-arg HTTP_PROXY="http://127.0.0.1:7890" --no-cachedocker build -t $image ./ --no-cache#--network=host
#docker build -t $image ./ --progress=plain --no-cache
#docker push $image
