move authentik env vars to shared file

docker-compose.authentik.yml

@@ -15,8 +15,6 @@ services:
       POSTGRES_PASSWORD: ${AUTHENTIK_PG_PASSWORD}
       POSTGRES_USER: ${AUTHENTIK_PG_USER:-authentik}
       POSTGRES_DB: ${AUTHENTIK_PG_DB:-authentik}
-    env_file:
-      - /opt/authentik/.env
 
   authentik-redis:
     image: docker.io/library/redis:alpine
@@ -47,8 +45,6 @@ services:
     volumes:
       - /opt/authentik/media:/media
       - /opt/authentik/templates:/templates
-    env_file:
-      - /opt/authentik/.env
     ports:
       - "19000:9000"
       - "19443:9443"
@@ -73,8 +69,6 @@ services:
       - /opt/authentik/media:/media
       - /opt/authentik/certs:/certs
       - /opt/authentik/templates:/templates
-    env_file:
-      - /opt/authentik/.env
     depends_on:
       - authentik-postgresql
       - authentik-redis