docker-cleanimage

A tool for cleaning up temp and cache directories to make docker images smaller

Installation procedures can produce a lot of logs and other cached files. This script attemts to clean up these files to make docker images a lot smaller.

Usage in Dockerfile

Download and install

ENV CLEANIMAGE_VERSION 2.0
ENV CLEANIMAGE_URL https://raw.githubusercontent.com/LolHens/docker-cleanimage/$CLEANIMAGE_VERSION/cleanimage

ADD ["$CLEANIMAGE_URL", "/usr/local/bin/"]
RUN chmod +x "/usr/local/bin/cleanimage"

Execute after each layer where necessary

RUN apt-get install -y \
      python3 \
 && cleanimage

Supported Applications

• apt
• yum
• apk
• pip

Commands

• apt-get -y --purge autoremove
• apt-get -y clean
• yum clean all

Directories

• /tmp/*
• /var/cache/apk/*
• /var/tmp/*
• /var/lib/apt/lists/*
• /var/log/alternatives.log
• /var/log/apt/
• /var/log/bootstrap.log
• /var/log/btmp
• /var/log/dpkg.log
• /var/log/faillog
• /var/log/fsck/
• /var/log/lastlog
• /var/log/wtmp
• ~/.cache/pip
• Files in /var/cache/