docker-compose.yml

services:

  # This is the database to which the all the other components in the stack will connect and interact with
  # (but mostly it's PostgREST that is going to be responsible for the bulk of the db traffic)
  db:
    environment:
      # env vars specific to postgres image used on first boot
      - POSTGRES_USER=${SUPER_USER}
      - POSTGRES_PASSWORD=${SUPER_USER_PASSWORD}
      - POSTGRES_DB=${DB_NAME}
      # env vars useful for our sql scripts
      - SUPER_USER=${SUPER_USER}
      - SUPER_USER_PASSWORD=${SUPER_USER_PASSWORD}
      - DB_NAME=${DB_NAME}
      - DB_USER=${DB_USER}
      - DB_PASS=${DB_PASS}
      - DB_ANON_ROLE=${DB_ANON_ROLE}
      - DEVELOPMENT=${DEVELOPMENT}
      - JWT_SECRET=${JWT_SECRET}
      - JWT_LIFETIME=${JWT_LIFETIME}
      - PG_VERSION=${PG_VERSION}
      - RP_ID=${RP_ID}
      - ORIGIN=${ORIGIN}
      - DISABLE_USER_VERIFICATION=${DISABLE_USER_VERIFICATION}

    volumes:
      - db-vol:/var/lib/postgresql/data

  # PostgREST instance, is responsible for communicating with the database
  # and providing a REST api, (almost) every request that is sent to the database goes through it
  postgrest:
    image: postgrest/postgrest:v12.0.3
    environment:
      - PGRST_DB_URI=postgres://${DB_USER}:${DB_PASS}@${DB_HOST}:${DB_PORT}/${DB_NAME}
      - PGRST_DB_SCHEMA=${DB_SCHEMA}
      - PGRST_DB_ANON_ROLE=${DB_ANON_ROLE}
      - PGRST_DB_POOL=${DB_POOL}
      - PGRST_JWT_SECRET=${JWT_SECRET}
      - PGRST_MAX_ROWS=${MAX_ROWS}
    depends_on:
      - db

  # OpenResty (Nginx + Lua) instance that sits in front of PostgREST.
  # All the requests coming into the system are first hitting this component.
  # After some processing/checks and transformation, the request is forwarded
  # to PostgREST down the stack.
  openresty:
    command: ["openresty", "-g", "daemon off; error_log /dev/stderr info;"]
    environment:
      - DEVELOPMENT=${DEVELOPMENT}
      - POSTGREST_HOST=${POSTGREST_HOST}
      - POSTGREST_PORT=${POSTGREST_PORT}
      - DB_HOST=${DB_HOST}
      - DB_PORT=${DB_PORT}
      - DB_NAME=${DB_NAME}
      - DB_SCHEMA=${DB_SCHEMA}
      - DB_USER=${DB_USER}
      - DB_PASS=${DB_PASS}
      - COOKIE_SESSION_SECRET=${COOKIE_SESSION_SECRET}
      - COOKIE_SESSION_LIFETIME=${COOKIE_SESSION_LIFETIME}
      - LISTAN_API_URL=${LISTAN_API_URL}
      - LISTAN_JWT_SECRET=${LISTAN_JWT_SECRET}
    volumes:
      - uploads-vol:/uploads
    depends_on:
      - postgrest

volumes:
  db-vol:
  uploads-vol: