chore: docker compose ClamAV optimizations

* Update docker-compose.yml

Adds a depends_on clause that waits for clamav to be fulyl started before starting pingvin-share.

* Update README.md

Explains that it may take a minute or two for the app to start while it waits for clamav.

* minor refactoring

Co-authored-by: Elias Schneider <login@eliasschneider.com>

docker-compose.yml

@@ -7,8 +7,12 @@ services:
       - 3000:3000
     volumes:
       - "./data:/opt/app/backend/data"
+# Optional: If you add ClamAV, uncomment the following to have ClamAV start first.
+#    depends_on:
+#      clamav:
+#        condition: service_healthy
 # Optional: Add ClamAV (see README.md)  
 # ClamAV is currently only available for AMD64 see https://github.com/Cisco-Talos/clamav/issues/482
 #  clamav:
 #    restart: unless-stopped
-#    image: clamav/clamav
+#    image: clamav/clamav