Feature request: environment variable for sqlite or postgres for docker image

[thelittlerocket]

Is your feature request related to a problem? Please describe. A clear and concise description of what the problem is. Ex. I'm always frustrated when [...]

Describe the solution you'd like A clear and concise description of what you want to happen. A docker image that has an environment variable one can set for using sqlite or postgres as database when the docker image runs.

Describe alternatives you've considered A clear and concise description of any alternative solutions or features you've considered.

Additional context Add any other context or screenshots about the feature request here.