feat: docker run option

[ftupas]

This pr does the following:

• Adds Dockerfile to build the rainfrog binary
• Update readme
• resolves docker run option #89

❯ docker run -it --rm --name rainfrog \
  -p 5432:5432 \
  -e username="rainfrog" \
  -e password="password" \
  -e hostname="host.docker.internal" \
  -e db_port="5432" \
  -e dbname="rainfrog" rainfrog

[ftupas]

For now we build it locally but I think docker hub needs to be setup in order to

• Publish the image to docker hub so it can be pulled directly
• Add cicd for docker

[achristmascarl]

curious, what's the reason for different images for runtime vs building?

[ftupas]

primarily for separation of concerns but also for efficiency and maintainability, bonus is you have a smaller image size

here's a great reference https://docs.docker.com/build/building/multi-stage/

[achristmascarl]

if the binary is in /usr/local/bin, does this chown do anything?

[ftupas]

good catch, updated it

[achristmascarl]

For now we build it locally but I think docker hub needs to be setup in order to

• Publish the image to docker hub so it can be pulled directly

• Add cicd for docker

thanks for tackling this; it looks good, once the tests run i'll merge it and then set up dockerhub / change the readme in a follow up pr.

[github-actions]

Included in release v0.2.3