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Dockerfile的使用

article 2024/11/8 21:37:44

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/apk


RUN rm -rf /var/cache/apk/* && \
    rm -rf /tmp/*


RUN apk update


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 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 8080


COPY --chown=java-app firefly  /home/java-app/firefly


ADD docker-entrypoint.sh /home/java-app/firefly/docker-entrypoint.sh


RUN chown -R java-app:java-app  /home/java-app


USER java-app


WORKDIR /home/java-app/firefly


CMD /home/java-app/firefly/docker-entrypoint.sh

精简的Dockerfile文件

FROM openjdk:8-alpine
    
RUN echo "http://mirrors.ustc.edu.cn/alpine/v3.4/main/"  > /etc/apk/repositories
RUN cat /etc/apk/repositories
 
RUN 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 8080

COPY --chown=java-app firefly  /home/java-app/firefly

ADD docker-entrypoint.sh /home/java-app/firefly/docker-entrypoint.sh

RUN chown -R java-app:java-app  /home/java-app

USER java-app

WORKDIR /home/java-app/firefly

CMD /home/java-app/firefly/docker-entrypoint.sh

制作镜像命令脚本

#!/bin/bash

image=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-cache

docker build -t $image  ./   --no-cache

#--network=host
#docker build -t $image  ./   --progress=plain --no-cache
#docker push $image

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