Split postgres support into separate compose so that it defaults to sqlite instead

.env.sample

@@ -6,8 +6,6 @@ DOMAIN=n8n.example.com
 #EXTRA_DOMAINS=', `www.n8n.example.com`'
 LETS_ENCRYPT_ENV=production
 
-SECRET_DB_PASSWORD_VERSION=v1
-
 # Change to `true` to enable sending "anonymous" telemetry data to n8n
 # https://docs.n8n.io/reference/data-collection/
 N8N_DIAGNOSTICS_ENABLED=false
@@ -31,3 +29,7 @@ COMPOSE_FILE="compose.yml"
 #N8N_BASIC_AUTH_ACTIVE=true
 #N8N_BASIC_AUTH_USER=username
 #SECRET_ADMIN_PASSWORD_VERSION=v1
+
+# Use Postgres instead of SQLite
+#COMPOSE_FILE="$COMPOSE_FILE:compose.postgres.yml"
+#SECRET_DB_PASSWORD_VERSION=v1

compose.postgres.yml

@@ -0,0 +1,57 @@
+# Compose for PostGres mode instead of the default sqlite mode.
+services:
+  app:
+    environment:
+      - DB_TYPE=postgresdb
+      - DB_POSTGRESDB_HOST=${STACK_NAME}_db
+      - DB_POSTGRESDB_PORT=5432
+      - DB_POSTGRESDB_DATABASE=n8n
+      - DB_POSTGRESDB_USER=root
+      - DB_POSTGRESDB_PASSWORD_FILE=/run/secrets/db_password
+    depends_on:
+      - db
+    secrets:
+      - db_password
+
+  db:
+    image: postgres:16
+    networks:
+      - internal_network
+    environment:
+      - POSTGRES_USER=root
+      - POSTGRES_PASSWORD_FILE=/run/secrets/db_password
+      - POSTGRES_DB=n8n
+    configs:
+      - source: db_entrypoint
+        target: /docker-entrypoint.sh
+        mode: 0555
+    secrets:
+      - db_password
+    healthcheck:
+      test: ["CMD", "pg_isready", "-U", "root", "-d", "n8n"]
+    volumes:
+      - 'postgresql_data:/var/lib/postgresql/data'
+    entrypoint: /docker-entrypoint.sh
+    deploy:
+      labels:
+        backupbot.backup: "true"
+        backupbot.backup.pre-hook: "bash -c 'PGPASSWORD=$$(cat $${POSTGRES_PASSWORD_FILE}) pg_dump -U $${POSTGRES_USER} $${POSTGRES_DB} > /tmp/backup.sql'"
+        backupbot.backup.post-hook: "rm -rf /tmp/backup.sql"
+        backupbot.backup.path: "/tmp/backup.sql"
+
+secrets:
+  # db_non_root_password:
+  #   external: true
+  #   name: ${STACK_NAME}_db_non_root_password_${SECRET_DB_NON_ROOT_PASSWORD_VERSION}
+  db_password:
+    external: true
+    name: ${STACK_NAME}_db_password_${SECRET_DB_PASSWORD_VERSION}
+
+volumes:
+  postgresql_data:
+
+configs:
+  db_entrypoint:
+    name: ${STACK_NAME}_db_entrypoint_${DB_ENTRYPOINT_VERSION}
+    file: entrypoint.postgres.sh.tmpl
+    template_driver: golang

compose.yml

@@ -5,27 +5,17 @@ services:
   app:
     image: n8nio/n8n:0.237.0
     environment:
-      - DB_TYPE=postgresdb
-      - DB_POSTGRESDB_HOST=${STACK_NAME}_db
-      - DB_POSTGRESDB_PORT=5432
-      - DB_POSTGRESDB_DATABASE=n8n
-      - DB_POSTGRESDB_USER=root
-      - DB_POSTGRESDB_PASSWORD_FILE=/run/secrets/db_password
       - N8N_PERSONALIZATION_ENABLED
       - N8N_DIAGNOSTICS_ENABLED
       - N8N_USER_MANAGEMENT_DISABLED
       - N8N_BASIC_AUTH_ACTIVE=false
       - WEBHOOK_URL=https://${DOMAIN}
       - NODE_FUNCTION_ALLOW_EXTERNAL=moment
-    depends_on:
-      - db
     networks:
       - proxy
       - internal_network
     volumes:
       - n8n:/home/node/.n8n
-    secrets:
-      - db_password
     deploy:
       update_config:
         failure_action: rollback
@@ -44,51 +34,10 @@ services:
         - "backupbot.backup=true"
         - "backupbot.backup.path=/home/node/.n8n"
 
-  db:
-    image: postgres:16
-    networks:
-      - internal_network
-    environment:
-      - POSTGRES_USER=root
-      - POSTGRES_PASSWORD_FILE=/run/secrets/db_password
-      - POSTGRES_DB=n8n
-    configs:
-      - source: db_entrypoint
-        target: /docker-entrypoint.sh
-        mode: 0555
-    secrets:
-      - db_password
-    healthcheck:
-      test: ["CMD", "pg_isready", "-U", "root", "-d", "n8n"]
-    volumes:
-      - 'postgresql_data:/var/lib/postgresql/data'
-    entrypoint: /docker-entrypoint.sh
-    deploy:
-      labels:
-        backupbot.backup: "true"
-        backupbot.backup.pre-hook: "bash -c 'PGPASSWORD=$$(cat $${POSTGRES_PASSWORD_FILE}) pg_dump -U $${POSTGRES_USER} $${POSTGRES_DB} > /tmp/backup.sql'"
-        backupbot.backup.post-hook: "rm -rf /tmp/backup.sql"
-        backupbot.backup.path: "/tmp/backup.sql"
-
-secrets:
-  # db_non_root_password:
-  #   external: true
-  #   name: ${STACK_NAME}_db_non_root_password_${SECRET_DB_NON_ROOT_PASSWORD_VERSION}
-  db_password:
-    external: true
-    name: ${STACK_NAME}_db_password_${SECRET_DB_PASSWORD_VERSION}
-
 volumes:
   n8n:
-  postgresql_data:
 
 networks:
   proxy:
     external: true
   internal_network:
-
-configs:
-  db_entrypoint:
-    name: ${STACK_NAME}_db_entrypoint_${DB_ENTRYPOINT_VERSION}
-    file: entrypoint.postgres.sh.tmpl
-    template_driver: golang