dockerfile-cheat-sheet

实用的 Dockerfile 指令。

设置语言

ENV LC_ALL=C.UTF-8 \
    LANG=C.UTF-8

设置时区
ENV TZ=Asia/Shanghai

拷贝 ldd

ldd /usr/bin/env | grep "=> /" | awk '{print $3}' | xargs -I '{}' cp -L -n -v '{}' /tmp/libs/

安装 dumb-init

ADD https://github.com/Yelp/dumb-init/releases/download/v1.2.5/dumb-init_1.2.5_x86_64 /usr/local/bin/dumb-init
RUN chmod +x /usr/local/bin/dumb-init
# before the last end line
ENTRYPOINT ["dumb-init", "--"]

删除 test pyc pyo

find /usr/local -depth \
    \( \
        \( -type d -a \( -name test -o -name tests \) \) \
        -o \
        \( -type f -a \( -name '*.pyc' -o -name '*.pyo' \) \) \
    \) -exec rm -rf '{}'

alpine / debian / ubuntu (通用) 删除无用文件

rm -rf /root/.cache /tmp/* /var/lib/apt/* /var/cache/* /var/log/*

设置 alpine 更新镜像 (Mirror)

mirrors.aliyun.com
mirrors.ustc.edu.cn
mirrors.tuna.tsinghua.edu.cn

ARG MIRROR=mirrors.tuna.tsinghua.edu.cn
ARG SOURCES="/etc/apk/repositories"
RUN sed -i 's/http/https/g' $SOURCES \
    && sed -i 's/dl-cdn.alpinelinux.org/'$MIRROR'/g' $SOURCES

设置 debian 更新镜像 (Mirror)

mirrors.tuna.tsinghua.edu.cn
mirrors.ustc.edu.cn
mirrors.163.com
mirrors.aliyun.com

ARG MIRROR=mirrors.tuna.tsinghua.edu.cn
ARG SOURCES="/etc/apt/sources.list"
RUN sed -i 's/deb.debian.org/'$MIRROR'/g' $SOURCES

设置 ubuntu 更新镜像 (Mirror)

ARG MIRROR=mirrors.tuna.tsinghua.edu.cn
ARG SOURCES="/etc/apt/sources.list"
RUN sed -i 's/archive.ubuntu.com/'$MIRROR'/g' $SOURCES

设置 PyPI 更新镜像 (Mirror)

ENV PIP_INDEX_URL=https://pypi.tuna.tsinghua.edu.cn/simple

一行设置--no-install-recommends

apt-config dump | grep -we Recommends -e Suggests | sed s/1/0/ | tee /etc/apt/apt.conf.d/999norecommend