Docker Cheat Sheet

  • Dockerfile commands
    • RUN = during build time, run commands and save the result
    • ENTRYPOINT = during run time
      • make the container act as an executable, commands given by CLI are treated as arguments to this executable
    • CMD = during run time
      • execute a default command if no command given by CLI
      • if there is an ENTRYPOINT, this will instead set default arguments, which can be overridden by CLI
      • think of CMD as default arguments to the docker run command

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