thoughtsync/docker-compose.yml

# ThoughtSync — PRODUCTION stack (app + Postgres).
#
# This is the default compose file: `docker compose up -d` runs a real deployment
# from the published image. Development lives in docker-compose.dev.yml (hot-reload,
# builds from source).
#
#   cp .env.example .env      # then set POSTGRES_PASSWORD
#   docker compose up -d
#
# Per family rule 12 the agent does NOT start this — run it yourself.
#
# Upgrades:   docker compose pull && docker compose up -d
# Rollback:   set THOUGHTSYNC_TAG to a commit sha in .env, then the same two commands.
#             Every push publishes an immutable :<sha> image for exactly this.
#
# Schema migrations run automatically at container start (see the Dockerfile CMD),
# so an upgrade is just a pull and a restart. Take a backup first anyway:
#
#   docker compose exec -T db pg_dump -U thoughtsync thoughtsync > backup.sql
#
# Attachments are files, not rows — they live in the `thoughtsync-data` volume and
# a pg_dump does NOT contain them. Back up both or you'll restore notes whose images
# are gone.

services:
  db:
    image: postgres:16-alpine
    restart: unless-stopped
    environment:
      POSTGRES_USER: ${POSTGRES_USER:-thoughtsync}
      # No default on purpose. A production compose that ships a known password is
      # how self-hosted databases end up in search engines; compose fails fast here
      # instead, with the message below.
      POSTGRES_PASSWORD: ${POSTGRES_PASSWORD:?set POSTGRES_PASSWORD in .env — see .env.example}
      POSTGRES_DB: ${POSTGRES_DB:-thoughtsync}
    volumes:
      # Volume names kept from the previous compose file so an existing deployment
      # upgrades in place. Renaming them would silently start against an empty
      # database while the old one sat there, orphaned and looking like data loss.
      - thoughtsync-db:/var/lib/postgresql/data
    # Deliberately NOT published to the host. The app reaches Postgres over the
    # compose network; exposing 5432 only widens the attack surface. If you need
    # psql, `docker compose exec db psql -U thoughtsync` gets you there without it.
    healthcheck:
      test: ["CMD-SHELL", "pg_isready -U ${POSTGRES_USER:-thoughtsync} -d ${POSTGRES_DB:-thoughtsync}"]
      interval: 10s
      timeout: 5s
      retries: 10
      start_period: 30s
    logging: &logging
      driver: json-file
      options:
        # Unbounded container logs are a slow-motion disk-full outage on a
        # long-running self-hosted box.
        max-size: "10m"
        max-file: "3"

  app:
    # :latest tracks `main`. Set THOUGHTSYNC_TAG=dev in .env to follow the
    # development line instead, or a commit sha to pin exactly.
    image: git.fabledsword.com/bvandeusen/thoughtsync:${THOUGHTSYNC_TAG:-latest}
    restart: unless-stopped
    depends_on:
      db:
        condition: service_healthy
    environment:
      # The only required application setting. Everything else a person might want
      # to tune lives in the admin Settings UI, backed by the database (rule 25).
      THOUGHTSYNC_DATABASE_URL: postgresql+asyncpg://${POSTGRES_USER:-thoughtsync}:${POSTGRES_PASSWORD}@db:5432/${POSTGRES_DB:-thoughtsync}
    volumes:
      # Uploaded attachments. /var/thoughtsync is fixed in the app (Config.DATA_DIR),
      # not configurable — mount it or lose every image on container recreation.
      - thoughtsync-data:/var/thoughtsync
    # WHERE THE APP IS REACHABLE FROM. Three shapes, and the right answer is
    # different for each — the default serves the first.
    #
    # 1. LAN, no proxy (the default). Binds every interface so your phone and your
    #    desktop can reach the server. This is what makes a self-hosted install work
    #    out of the box, and it is why the default is NOT the locked-down value: a
    #    server only reachable from the machine it runs on is not hardened, it is
    #    broken.
    #
    # 2. Reverse proxy in Docker, on this network (Traefik discovering the container,
    #    an nginx container, etc). DELETE the `ports:` block below entirely. The proxy
    #    reaches the app over the compose network without any port being published,
    #    and publishing one is a second, unauthenticated way in that bypasses the
    #    proxy — including whatever the proxy is doing about TLS and auth.
    #
    # 3. Reverse proxy on the HOST (not in Docker). Set THOUGHTSYNC_BIND=127.0.0.1 in
    #    .env, so the port exists but only the host itself can reach it.
    #
    # If you are exposing this to the internet, you want 2 or 3. Leaving it at 1
    # means the app is reachable directly on port 5000, past everything your proxy
    # does.
    ports:
      - "${THOUGHTSYNC_BIND:-0.0.0.0}:${THOUGHTSYNC_PORT:-5000}:5000"
    healthcheck:
      # python rather than curl: the runtime image is python:3.12-slim and carries no
      # HTTP client binary. Hits the app's own /api/health.
      test:
        - CMD
        - python
        - -c
        - |
          import sys, urllib.request
          sys.exit(0 if urllib.request.urlopen("http://127.0.0.1:5000/api/health", timeout=5).status == 200 else 1)
      interval: 30s
      timeout: 10s
      retries: 5
      # Generous: the container waits for Postgres and runs migrations before it
      # serves anything, and a first boot builds the whole schema.
      start_period: 60s
    logging: *logging

volumes:
  thoughtsync-db:
  thoughtsync-data: