updated docker compose to demangle postgres from synapse namespace

docker/synapse/compose.yaml

@@ -1,6 +1,7 @@
 services:
   postgres:
     image: postgres:15-alpine
+    container_name: postgres
     restart: always
     environment:
       POSTGRES_USER: ${PSQL_NAME}
@@ -28,6 +29,7 @@ services:
 
   synapse-foxgirls:
     image: matrixdotorg/synapse:latest
+    container_name: synapse-foxgirls
     restart: unless-stopped
     environment:
       SYNAPSE_SERVER_NAME: foxgirls.date