Concise Docker notes

Docker Nub.md

• CMD
  • spin up image, run CMD, stop
  • w/ docker run arg ➜ run this instead of CMD
  • Same w/ dockder run … CMD
• ENTRYPOINT
  • spin up image, run ENTRYPOINT, stop
  • w/ docker run arg ➜ append to ENTRYPOINT arguments
  • Same w/ dockder run … --entrypoint=ENTRYPOINT
• CMD && ENTRYPOINT
  • spin up image, run ENTRYPOINT w/ CMD appended to ENTRYPOINT arguments, stop
  • w/ docker run arg ➜ replaces CMD in ^^^
  • Same w/ dockder run … CMD --entrypoint=ENTRYPOINT

Note: “stop” is when the process of the last thing goes away, so a daemon running in the FG will keep the image up 👍