Add Docker-based deployment: Dockerfile based on systemd image,
docker-compose.yaml, build script, entrypoint, external certificate
monitoring, CI workflow, and documentation.
This builds on the chatmaild/cmdeploy preparation in the previous
commit (j4n/docker-prep-chatmail) which added the env-var-driven
feature flags (CHATMAIL_NOSYSCTL, CHATMAIL_NOPORTCHECK, CHATMAIL_NOACME)
and @local deployment support needed by the container.
This is commit 2 of 3 to merge squashed changes on j4n/docker and docker
branches, original commits were beef0ec..606f36e
Architecture overview (mostly by original author Keonik1):
- Debian-systemd image wrapping the existing cmdeploy install
- Host networking to not manually expose the many ports needed
- Config via MAIL_DOMAIN env var or (new) mounted chatmail.ini
- New: cmdeploy stages: install at build, configure+activate at startup
- New: Monitoring service for external certs via systemd timer (chatmail-certmon)
- New: Image version tracking for automatic upgrade detection (cm + config hash)
- New: docker-compose.override.yaml pattern for user customizations
- New: GitHub Actions CI for ghcr.io image builds
Traefik reverse-proxy support is prepared but the specific files are
excluded from this PR and will be submitted separately.
TODO:
- [ ] Pull out CHATMAIL_NOACME as PR #855 introduced a proper mechanism
- [ ] Check if underlying image could be based on regular debian-slim
images with a step to enable systemd, similar to
https://github.com/alexdzyoba/docker-debian-systemd
Files added:
.dockerignore
.github/workflows/docker-build.yaml
docker-compose.yaml
docker-compose.override.yaml.example
docker/build.sh
docker/chatmail_relay.dockerfile
docker/files/chatmail-certmon.{service,sh,timer}
docker/files/entrypoint.sh
docker/files/setup_chatmail.service
docker/files/setup_chatmail_docker.sh
env.example
doc/source/docker.rst
Files modified:
.gitignore
doc/source/getting_started.rst
doc/source/index.rst
Co-authored-by: Keonik1 <keonik.dev@gmail.com>
Co-authored-by: missytake <missytake@systemli.org>
