perf(launch): keep containers stopped during build & init

tutor/commands/compose.py

@@ -100,26 +100,26 @@ def launch(
 
     config = tutor_config.load(context.obj.root)
 
+    click.echo(fmt.title("Stopping any existing platform"))
+    context.invoke(stop)
+
     if not skip_build:
         click.echo(fmt.title("Building Docker images"))
         images_to_build = hooks.Filters.IMAGES_BUILD_REQUIRED.apply([], context_name)
         if not images_to_build:
             fmt.echo_info("No image to build")
         context.invoke(images.build, image_names=images_to_build)
 
-    click.echo(fmt.title("Stopping any existing platform"))
-    context.invoke(stop)
-
     if pullimages:
         click.echo(fmt.title("Docker image updates"))
         context.invoke(dc_command, command="pull")
 
-    click.echo(fmt.title("Starting the platform in detached mode"))
-    context.invoke(start, detach=True)
-
     click.echo(fmt.title("Database creation and migrations"))
     context.invoke(do.commands["init"])
 
+    click.echo(fmt.title("Starting the platform in detached mode"))
+    context.invoke(start, detach=True)
+
     # Print the urls of the user-facing apps
     public_app_hosts = ""
     for host in hooks.Filters.APP_PUBLIC_HOSTS.iterate(context_name):