Take advantage of yaml lang: add defaults in compose file. Also require env vars

compose.yaml

@@ -1,6 +1,17 @@
+x-depends-on-configurator: &depends_on_configurator
+  depends_on:
+    configurator:
+      condition: service_completed_successfully
+
+x-backend-defaults: &backend_defaults
+  <<: *depends_on_configurator
+  image: frappe/frappe-worker:${FRAPPE_VERSION:?No Frappe version set}
+  volumes:
+    - sites:/home/frappe/frappe-bench/sites
+
 services:
   configurator:
-    image: frappe/frappe-worker:${FRAPPE_VERSION}
+    <<: *backend_defaults
     command: configure.py
     environment:
       DB_HOST: db
@@ -9,20 +20,15 @@ services:
       REDIS_QUEUE: redis:6379/1
       REDIS_SOCKETIO: redis:6379/2
       SOCKETIO_PORT: 9000
-    volumes:
-      - sites:/home/frappe/frappe-bench/sites
     depends_on:
       db:
         condition: service_healthy
 
   backend:
-    image: frappe/frappe-worker:${FRAPPE_VERSION}
+    <<: *backend_defaults
     volumes:
       - sites:/home/frappe/frappe-bench/sites
       - assets:/home/frappe/frappe-bench/sites/assets
-    depends_on: &depends_on_configurator
-      configurator:
-        condition: service_completed_successfully
 
   db:
     image: mariadb:10.6
@@ -36,7 +42,7 @@ services:
       - --skip-character-set-client-handshake
       - --skip-innodb-read-only-compressed
     environment:
-      MYSQL_ROOT_PASSWORD: ${DB_PASSWORD}
+      MYSQL_ROOT_PASSWORD: ${DB_PASSWORD:?No db password set}
     volumes:
       - db-data:/var/lib/mysql
 
@@ -76,38 +82,26 @@ services:
     userns_mode: host
 
   websocket:
+    <<: *depends_on_configurator
     image: frappe/frappe-socketio:${FRAPPE_VERSION}
     volumes:
       - sites:/home/frappe/frappe-bench/sites
-    depends_on: *depends_on_configurator
 
   queue-short:
-    image: frappe/frappe-worker:${FRAPPE_VERSION}
+    <<: *backend_defaults
     command: bench worker --queue short
-    volumes:
-      - sites:/home/frappe/frappe-bench/sites
-    depends_on: *depends_on_configurator
 
   queue-default:
-    image: frappe/frappe-worker:${FRAPPE_VERSION}
+    <<: *backend_defaults
     command: bench worker --queue default
-    volumes:
-      - sites:/home/frappe/frappe-bench/sites
-    depends_on: *depends_on_configurator
 
   queue-long:
-    image: frappe/frappe-worker:${FRAPPE_VERSION}
+    <<: *backend_defaults
     command: bench worker --queue long
-    volumes:
-      - sites:/home/frappe/frappe-bench/sites
-    depends_on: *depends_on_configurator
 
   scheduler:
-    image: frappe/frappe-worker:${FRAPPE_VERSION}
+    <<: *backend_defaults
     command: bench schedule
-    volumes:
-      - sites:/home/frappe/frappe-bench/sites
-    depends_on: *depends_on_configurator
 
 # ERPNext requires local assets access (Frappe does not)
 volumes:

overrides/compose.erpnext.yaml

@@ -1,21 +1,24 @@
+x-erpnext-backend-image: &erpnext_backend_image
+  image: frappe/erpnext-worker:${ERPNEXT_VERSION:?No ERPNext version set}
+
 services:
   configurator:
-    image: frappe/erpnext-worker:${ERPNEXT_VERSION}
+    <<: *erpnext_backend_image
 
   backend:
-    image: frappe/erpnext-worker:${ERPNEXT_VERSION}
+    <<: *erpnext_backend_image
 
   frontend:
     image: frappe/erpnext-nginx:${ERPNEXT_VERSION}
 
   queue-short:
-    image: frappe/erpnext-worker:${ERPNEXT_VERSION}
+    <<: *erpnext_backend_image
 
   queue-default:
-    image: frappe/erpnext-worker:${ERPNEXT_VERSION}
+    <<: *erpnext_backend_image
 
   queue-long:
-    image: frappe/erpnext-worker:${ERPNEXT_VERSION}
+    <<: *erpnext_backend_image
 
   scheduler:
-    image: frappe/erpnext-worker:${ERPNEXT_VERSION}
+    <<: *erpnext_backend_image

overrides/compose.https.yaml

@@ -16,7 +16,7 @@ services:
       - --entrypoints.websecure.address=:443
       - --certificatesResolvers.main-resolver.acme.httpChallenge=true
       - --certificatesResolvers.main-resolver.acme.httpChallenge.entrypoint=web
-      - --certificatesResolvers.main-resolver.acme.email=${LETSENCRYPT_EMAIL}
+      - --certificatesResolvers.main-resolver.acme.email=${LETSENCRYPT_EMAIL:?No Let's Encrypt email set}
       - --certificatesResolvers.main-resolver.acme.storage=/letsencrypt/acme.json
     ports:
       - 443:443

overrides/compose.postgres.yaml

@@ -13,6 +13,6 @@ services:
       retries: 15
     command: []
     environment:
-      POSTGRES_PASSWORD: ${DB_PASSWORD}
+      POSTGRES_PASSWORD: ${DB_PASSWORD:?No db password set}
     volumes:
       - db-data:/var/lib/postgresql