(fix) remove unused env var on penpot compose file

docker-compose.penpot.yml

@@ -33,12 +33,9 @@ services:
       - penpot-redis
 
     environment:
-      # Used for creating tokens, important to be true random value
-      - PENPOT_SECRET_KEY=provide-here-a-secret-random-key
-
       # Should be set to the public domain when penpot is going to be
       # served.
-      - PENPOT_PUBLIC_URI=http://localhost
+      - PENPOT_PUBLIC_URI=http://localhost:9001
 
       # Standard database connection parametes (only postgresql is supported):
       - PENPOT_DATABASE_URI=postgresql://penpot-postgres/penpot
@@ -80,9 +77,6 @@ services:
       # - PENPOT_SMTP_TLS=true
       # - PENPOT_SMTP_SSL=false
 
-      - PENPOT_ASSERTS_ENABLED=false
-      - PENPOT_DEBUG=false
-
     networks:
       - penpot