Add Hasura GraphQL Engine container with nginx proxy

Adds Hasura v2.44.0 service connected to the existing Postgres database,
proxied through nginx at /hasura/ with WebSocket support for the console.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

docker-compose.yml

@@ -30,6 +30,7 @@ services:
             - backend
             - icecast2
             - gitea
+            - hasura
         networks:
             - app-network
         ports:
@@ -83,6 +84,21 @@ services:
         volumes:
             - dbdata:/var/lib/postgresql/data
 
+    hasura:
+        image: hasura/graphql-engine:v2.44.0
+        container_name: "${HASURA_HOST}"
+        restart: always
+        depends_on:
+            - db
+        networks:
+            - app-network
+        environment:
+            HASURA_GRAPHQL_DATABASE_URL: "postgres://${POSTGRES_USER}:${POSTGRES_PASSWORD}@${POSTGRES_HOST}:${POSTGRES_PORT}/${POSTGRES_DB}"
+            HASURA_GRAPHQL_ADMIN_SECRET: "${HASURA_GRAPHQL_ADMIN_SECRET}"
+            HASURA_GRAPHQL_ENABLE_CONSOLE: "true"
+            HASURA_GRAPHQL_DEV_MODE: "true"
+            HASURA_GRAPHQL_ENABLED_LOG_TYPES: "startup, http-log, webhook-log, websocket-log, query-log"
+
     icecast2:
         build:
             context: ./icecast2