Serve postgres's consumers the port its server is published on, not the container's 5432 (issue 957)

On novox postgres is published 6852:5432; handed 5432, gitea and keycloak reached
nothing once their files were filled from postgres's entry.

modules/postgres/cmd/postgres-provider/main.go

@@ -50,7 +50,7 @@ func main() {
 			},
 			Node: os.Getenv("MESH_NODE"),
 		}
-		run, p, bus, err := moved(consumers, h)
+		run, p, bus, err := moved(consumers, h, publishedPort(os.Getenv))
 		if err != nil {
 			say("%v", err)
 		} else {