feat: Use PostgreSQL

Signed-off-by: Julien Riou <julien@riou.xyz>

templates/docker-compose.yml.j2

@@ -6,8 +6,27 @@ services:
     build: /opt/coller
     container_name: collerd
     restart: always
+    networks:
+        - coller
     ports:
       - "{{ coller_port }}:8080"
     volumes:
       - "{{ coller_config_dir }}/collerd.json:/etc/collerd.json:ro"
     command: collerd -config /etc/collerd.json
+
+  db:
+    image: postgres:17
+    hostname: db
+    container_name: collerd_db
+    restart: always
+    env_file: {{ coller_config_dir }}/db.env
+    networks:
+      - coller
+    volumes:
+      - coller:/var/lib/postgresql/data
+
+networks:
+  coller:
+
+volumes:
+  coller: