Comment on Should I move to Docker?

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xcjs@programming.dev ⁨11⁩ ⁨months⁩ ago

You can tinker in the image in a variety of ways, but make sure to preserve your state outside the container in some way:

  1. Extend the image you want to use with a custom Docker file
  2. Execute an interactive shell session, example docker exec -it containerName /bin/bash
  3. Replace or expose filesystem resources using host or volume mounts.

Yes, you set a variety of resources constraints, including but not limited to processor and memory utilization.

There’s no reason to “freeze” a container, but if your state is in a host or volume mount, destroy the container, migrate your data, and resume it with a run command or docker-compose file. Different terminology and concept, but same result.

It may be worth it if you want to free up overhead used by virtual machines on your host, store your state more centrally, and/or represent your infrastructure as a docker-compose file or set of docker-compose files.

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