That demonstrates how the Proxy (Traefik) uses the path prefix and how the server (Uvicorn) uses the `root_path` from the option `--root-path`.

### Check the docs UI { #check-the-docs-ui }

But here's the fun part. ✨

/*
 * Copyright 2020 the original author or authors.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,

if [ $user_count -ne $expanded_user_count ]; then
	echo "BUG: original user count differs from expanded setup"
	exit 1
fi

if [ $policy_count -ne $expanded_policy_count ]; then
	echo "BUG: original policy count  differs from expanded setup"
	exit 1
fi

./mc version info myminio/versioned | grep -q "versioning is enabled"
ret=$?
if [ $ret -ne 0 ]; then
	echo "expected versioning enabled after expansion"
	exit 1

You will see the automatic API docs for the main app, including only its own _path operations_:

<img src="/img/tutorial/sub-applications/image01.png">

And then, open the docs for the sub-application, at <a href="http://127.0.0.1:8000/subapi/docs" class="external-link" target="_blank">http://127.0.0.1:8000/subapi/docs</a>.

# so this script no longer runs in any automated fashion.
#
# Options:
#   -e: stop at first failure

if [ ! -f run.bash ]; then
	echo 'buildall.bash must be run from $GOROOT/src' 1>&2
	exit 1
fi

sete=false
if [ "$1" = "-e" ]; then
	sete=true
	shift
fi

if [ "$sete" = true ]; then
	set -e
fi

pattern="$1"
if [ "$pattern" = "" ]; then

if [ $? -ne 0 ]; then
	echo "expecting the command to succeed, exiting.."
	exit_1
fi
./mc admin policy info minio3 projecta >/dev/null 2>&1
if [ $? -ne 0 ]; then
	echo "expecting the command to succeed, exiting.."
	exit_1
fi

./mc admin policy remove minio3 projecta

sleep 10
./mc admin policy info minio1 projecta
if [ $? -eq 0 ]; then
	echo "expecting the command to fail, exiting.."

sleep 10
./mc admin policy info minio1 rw
if [ $? -eq 0 ]; then
	echo "expecting the command to fail, exiting.."
	exit_1
fi

./mc admin policy info minio2 rw
if [ $? -eq 0 ]; then
	echo "expecting the command to fail, exiting.."
	exit_1
fi

./mc admin user info minio1 "uid=dillon,ou=people,ou=swengg,dc=min,dc=io"
if [ $? -ne 0 ]; then
	echo "policy mapping missing, exiting.."
	exit_1
fi

	if ! ps -p $pid1 1>&2 >/dev/null; then
		echo "minio server 1 is not running" && fail
	fi

	if ! ps -p $pid2 1>&2 >/dev/null; then
		echo "minio server 2 is not running" && fail
	fi

	if ! ps -p $pid3 1>&2 >/dev/null; then
		echo "minio server 3 is not running" && fail
	fi

	if ! pkill minio; then
		fail
	fi

	sleep 1
	if pgrep minio; then
		# forcibly killing, to proceed further properly.

You can also declare the `Response` parameter in dependencies, and set cookies (and headers) in them.

## Return a `Response` directly { #return-a-response-directly }

You can also create cookies when returning a `Response` directly in your code.

/*
 * Copyright 2020 the original author or authors.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,