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Maurice
103 lines
3.9 KiB
Markdown
103 lines
3.9 KiB
Markdown
# Install: Docker Compose
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Production-ready setup using Docker Compose with security hardening enabled.
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## Compose File
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See https://github.com/mauriceboe/TREK/blob/main/docker-compose.yml
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## Security Hardening Explained
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The compose file ships with several hardening options enabled by default:
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| Setting | What it does |
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| `read_only: true` | Mounts the container filesystem read-only; only the two named volumes and `/tmp` are writable |
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| `security_opt: no-new-privileges:true` | Prevents the process from gaining additional Linux privileges via setuid/setgid executables |
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| `cap_drop: [ALL]` | Drops all Linux capabilities from the container |
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| `cap_add: [CHOWN, SETUID, SETGID]` | Adds back only the capabilities needed for the entrypoint to drop privileges to the `node` user |
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| `tmpfs: /tmp:noexec,nosuid,size=64m` | Mounts a 64 MB in-memory `/tmp`; required because the container root is read-only |
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> **Note (Docker from snap):** If you installed Docker via `snap` (config under `/var/snap/docker/...`), `no-new-privileges:true` will prevent the container from starting with `exec /usr/bin/dumb-init: operation not permitted`. This is a [snap/AppArmor limitation](https://bugs.launchpad.net/snapd/+bug/1908448), not a TREK issue — install Docker from the [official apt repository](https://docs.docker.com/engine/install/ubuntu/) instead, or remove `no-new-privileges`. See [Troubleshooting](Troubleshooting#container-wont-start-exec-usrbindumb-init-operation-not-permitted).
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## Volumes
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| Host path | Container path | Contents |
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|---|---|---|
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| `./data` | `/app/data` | SQLite database, logs, `.jwt_secret`, `.encryption_key` |
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| `./uploads` | `/app/uploads` | Uploaded files (photos, documents, covers, avatars) |
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### Named Volumes
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The compose file above uses bind mounts (`./data`, `./uploads`). You can switch to Docker named volumes, which are fully managed by Docker and not tied to a specific host path. See the [Docker Compose volumes reference](https://docs.docker.com/reference/compose-file/volumes/) for all options.
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```yaml
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services:
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app:
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# ... (rest of service config unchanged)
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volumes:
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- trek_data:/app/data
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- trek_uploads:/app/uploads
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volumes:
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trek_data:
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trek_uploads:
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```
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Docker creates the volumes automatically on first `docker compose up`. Use `docker volume ls` and `docker volume inspect` to manage them.
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## Environment Variables
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The compose file reads variables from a `.env` file placed alongside `docker-compose.yml`. At minimum, set:
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```bash
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# .env
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ENCRYPTION_KEY=<output of: openssl rand -hex 32>
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TZ=Europe/Berlin
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ALLOWED_ORIGINS=https://trek.example.com
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APP_URL=https://trek.example.com
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```
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Uncomment and fill in the OIDC, initial setup, or MCP variables as needed. For a full description of every variable, see [Environment-Variables](Environment-Variables).
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## Image Tags
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Three tag strategies are available:
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| Tag | Example | Behavior |
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|---|---|---|
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| `latest` | `mauriceboe/trek:latest` | Always the newest release across all major versions |
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| Major version | `mauriceboe/trek:3` | Latest release pinned to that major version |
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| Full version | `mauriceboe/trek:3.0.15` | Exact release; never changes |
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The compose file above uses `latest`. To pin, change the `image:` line:
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```yaml
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image: mauriceboe/trek:3 # track major version 3
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image: mauriceboe/trek:3.0.15 # pin to exact release
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```
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## Start TREK
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```bash
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docker compose up -d
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```
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Check the logs:
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```bash
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docker compose logs -f
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```
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## HTTPS and Reverse Proxy
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This compose file is designed for deployments where a reverse proxy (nginx, Caddy, Traefik) terminates TLS in front of TREK. To enable HTTPS redirects and secure cookies, uncomment `FORCE_HTTPS=true` and `TRUST_PROXY=1`.
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See [Reverse-Proxy](Reverse-Proxy) for complete proxy configuration examples.
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## Next Steps
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- [Environment-Variables](Environment-Variables) — full variable reference
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- [Reverse-Proxy](Reverse-Proxy) — HTTPS configuration
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- [Updating](Updating) — how to pull a new image
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