load each environment variable automatically from the env file

docker-compose.yml

@@ -1,18 +1,29 @@
+# Note that .env file will automatically populate
+# variables in this file.
+# If these variables are also set on the host system,
+# those will be used over the .env file.
+# See https://vsupalov.com/docker-arg-env-variable-guide/
+
+x-common-environment: &common-server-environment
+  APNS_IS_PRODUCTION: ${APNS_IS_PRODUCTION}
+  APNS_BUNDLE_ID: ${APNS_BUNDLE_ID}
+  APNS_TEAM_ID: ${APNS_TEAM_ID}
+  APNS_KEY_ID: ${APNS_KEY_ID}
+  APNS_PRIVATE_KEY: ${APNS_PRIVATE_KEY}
+
 services:
   dev:
     build: .
     command: npm run start:dev
     ports:
       - "4000:4000"
-    env_file: .env
     depends_on:
       - redis
+    environment:
+      <<: *common-server-environment
     volumes:
       - .:/usr/src/app
 
-  # Note that neither app-integration-test or test modes require env variables,
-  # need to find a way to pass variables without .env if this changes
-
   app-integration-test:
     build: .
     command: npm run start:dev integration-testing
@@ -20,6 +31,9 @@ services:
       - "4000:4000"
     depends_on:
       - redis
+    environment:
+      <<: *common-server-environment
+
     volumes:
       - .:/usr/src/app
 
@@ -28,6 +42,9 @@ services:
     command: npm run test
     depends_on:
       - redis
+    environment:
+      <<: *common-server-environment
+
     volumes:
       - .:/usr/src/app
   redis: