The protbot sent "DSGN:\x00" as the sign request type, but the server
strips the last 3 characters as a version suffix. Send "DSGN:041"
(ZZ client mode 41) to match the real client format.
The entrance channel entry parser read 14 bytes for remaining fields
but the server writes 18 bytes (9 uint16, not 7), causing a panic
when parsing the server list.
The channel server panicked on disconnect when a session had no
decompressed save data (e.g. protbot or early client disconnect).
Guard Save() against nil decompSave.
Also fix docker-compose volume mount for Postgres 18 which changed
its data directory layout.
- Remove deprecated version field from docker-compose.yml
- Pin Postgres to 18-alpine (matches existing db-data)
- Remove undocumented web (Apache) service
- Fix config/bin volume mounts to use docker/ directory
- Gitignore docker/savedata, docker/bin, docker/config.json
- Rewrite docker/README.md: fix typos, use docker compose V2
commands, match actual compose file behavior
- Link docker/README.md from main README Docker section
Multi-stage Dockerfile for smaller runtime image, CD workflow triggers
on main branch pushes and version tags, docker-compose defaults to the
prebuilt GHCR image.
