How to verify production Frappe Docker image with custom apps?

ERPNext
, ,
1

I followed the instructions from Frequently Asked Questions · frappe/frappe_docker Wiki · GitHub

I’m trying to keep the image as simple as possible. Here are my build steps.
apps.json:

[
        {
                "url": "https://github.com/frappe/erpnext",
                "branch": "version-15"
        },
        {
                "url": "PAT@therepo",
                "branch": "main"
        }
]

export APPS_JSON_BASE64=$(base64 -w 0 apps.json)

docker build \
	--build-arg HTTP_PROXY=theproxy \
	--build-arg HTTPS_PROXY=theproxy \
	--build-arg NO_PROXY=theproxy \
	--build-arg=FRAPPE_PATH=https://github.com/frappe/frappe \
	--build-arg=FRAPPE_BRANCH=version-15 \
	--build-arg=APPS_JSON_BASE64=$APPS_JSON_BASE64 \
	--tag=${CUSTOM_IMAGE}:${CUSTOM_TAG} \
	--file=images/layered/Containerfile .
docker push ${CUSTOM_IMAGE}:${CUSTOM_TAG}

docker compose -f compose.yaml \
  -f overrides/compose.mariadb.yaml \
  -f overrides/compose.redis.yaml \
  -f overrides/compose.traefik.yaml \
  config > ~/procura_build/docker-compose-procura.yaml
cd ~/procura_build
docker compose -f docker-compose-procura.yaml up -d

When accessing the Frappe service (http://procura:8046/) from a browser, I get this:
Not Found
procura does not exist

I checked from within that Frappe image:

frappe@1be6a9b5f850:~/frappe-bench$ cat /etc/hosts
127.0.0.1       localhost
::1     localhost ip6-localhost ip6-loopback
fe00::  ip6-localnet
ff00::  ip6-mcastprefix
ff02::1 ip6-allnodes
ff02::2 ip6-allrouters
172.20.0.5      1be6a9b5f850

frappe@1be6a9b5f850:~/frappe-bench$ curl http://localhost:8000
<!doctype html>
<html lang=en>
<title>404 Not Found</title>
<h1>Not Found</h1>
<p>localhost does not exist</p>

frappe@1be6a9b5f850:~/frappe-bench$ curl http://127.0.0.1:8000
<!doctype html>
<html lang=en>
<title>404 Not Found</title>
<h1>Not Found</h1>
<p>127.0.0.1 does not exist</p>

How do I verify the custom Frappe image? I think such steps to verify the image should be added to Frequently Asked Questions · frappe/frappe_docker Wiki · GitHub