* backend: refactor swarm support to also support podman (#260)
- implement podman support as subclass of swarm deployment
- podman is used when 'RUNTIME=podman' env var is set
- podman socket is mapped instead of docker socket
- podman-compose is used instead of docker-compose (though docker-compose works with podman, it does not support secrets, but podman-compose does)
- separate cli utils into SwarmRunner and PodmanRunner which extends it
- using config.yaml and config.env, both copied from sample versions
- work on simplifying config: add docker-compose.podman.yml and docker-compose.swarm.yml and signing and debug configs in ./configs
- add {build,run,stop}-{swarm,podman}.sh in scripts dir
- add init-configs, only copy if configs don't exist
- build local image use current version of podman, to support both podman 3.x and 4.x
- additional fixes for after testing podman on centos
- docs: update Deployment.md to cover swarm, podman, k8s deployment
* apply /api prefix consistently, both directly through backend and when accessing via frontend, fixes#236
* docs: update local deployment docs to use 9871 instead of 8000, don't expose 8000 by default
* schemas: don't include /openapi.json as /healthz in documentation, keep /healthz at root
* k8s: route backend to /api without additional rewriting
- add authsign to docker-compose.yml
- add signing.sample.yaml to be copied to signing.yaml for authsign
- add WACZ_SIGN_URL and WACZ_SIGN_TOKEN to config.sample.env
- signing enabled if WACZ_SIGN_URL is set
- add instructions on how to enable signing to Deployment
- update .gitignore, don't commit 'signing.yaml'
- update images to use public repo browsertrix images
