Change format of environment variables in compose files

hedgedoc/compose.yml

@@ -9,10 +9,10 @@ services:
       hedgedoc_db:
         condition: service_healthy
     environment:
-      - CMD_ALLOW_EMAIL_REGISTER=false
-      - CMD_DB_URL=postgres://hedgedoc:${DB_PASSWORD}@hedgedoc_db:5432/hedgedoc
-      - CMD_DOMAIN=pad.eliasfink.de
-      - CMD_PROTOCOL_USESSL=true
+      CMD_ALLOW_EMAIL_REGISTER: false
+      CMD_DB_URL: postgres://hedgedoc:${DB_PASSWORD}@hedgedoc_db:5432/hedgedoc
+      CMD_DOMAIN: pad.eliasfink.de
+      CMD_PROTOCOL_USESSL: true
     networks:
       - default
       - traefik
@@ -24,9 +24,9 @@ services:
     container_name: hedgedoc_db
     restart: always
     environment:
-      - POSTGRES_DB=hedgedoc
-      - POSTGRES_USER=hedgedoc
-      - POSTGRES_PASSWORD=${DB_PASSWORD}
+      POSTGRES_DB: hedgedoc
+      POSTGRES_USER: hedgedoc
+      POSTGRES_PASSWORD: ${DB_PASSWORD}
     healthcheck:
       test: pg_isready
       interval: 30s