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(curl -sSL "https://github.com/buildpacks/pack/releases/download/v0.17.0/pack-v0.17.0-linux.tgz" | sudo tar -C /usr/local/bin/ --no-same-owner -xzv pack)

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pack version

0.17.0+git-d9cb4e7.build-2045

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git clone https://github.com/shaowenchen/devops-python-sample

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cd devops-python-sample/src

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tree

.
|-- manage.py
|-- project
|   |-- app1
|   |   |-- admin.py
|   |   |-- apps.py
|   |   |-- __init__.py
|   |   |-- migrations
|   |   |   `-- __init__.py
|   |   |-- models.py
|   |   |-- tests.py
|   |   `-- views.py
|   |-- __init__.py
|   |-- settings.py
|   |-- tests.py
|   |-- urls.py
|   `-- wsgi.py
`-- requirements.txt

3 directories, 14 files

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pack builder suggest

Suggested builders:
	Google:                gcr.io/buildpacks/builder:v1      Ubuntu 18 base image with buildpacks for .NET, Go, Java, Node.js, and Python
	Heroku:                heroku/buildpacks:18              heroku-18 base image with buildpacks for Ruby, Java, Node.js, Python, Golang, & PHP
	Heroku:                heroku/buildpacks:20              heroku-20 base image with buildpacks for Ruby, Java, Node.js, Python, Golang, & PHP
	Paketo Buildpacks:     paketobuildpacks/builder:base     Ubuntu bionic base image with buildpacks for Java, .NET Core, NodeJS, Go, Ruby, NGINX and Procfile
	Paketo Buildpacks:     paketobuildpacks/builder:full     Ubuntu bionic base image with buildpacks for Java, .NET Core, NodeJS, Go, PHP, Ruby, Apache HTTPD, NGINX and Procfile
	Paketo Buildpacks:     paketobuildpacks/builder:tiny     Tiny base image (bionic build image, distroless-like run image) with buildpacks for Java Native Image and Go

Tip: Learn more about a specific builder with:
	pack inspect-builder <builder-image>

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pack build python-sample --builder heroku/buildpacks:20

20: Pulling from heroku/buildpacks
Digest: sha256:128508a60a25ecac8ed16b4507747cceaf627e2617b2e898d98ac303411a010f
Status: Image is up to date for heroku/buildpacks:20
20: Pulling from heroku/pack
Digest: sha256:6f7301c933d3d0d777c3f5b99b5cc9d8e5ee7304e69b5f05989e19e5c4206a95
Status: Image is up to date for heroku/pack:20
===> DETECTING
======== Output: heroku/ruby@0.0.1 ========
no
err:  heroku/ruby@0.0.1 (1)
heroku/python   0.3
heroku/procfile 0.6
===> ANALYZING
Previous image with name "python-sample" not found
===> RESTORING
===> BUILDING
-----> Installing python-3.6.12
-----> Installing pip 20.1.1, setuptools 47.1.1 and wheel 0.34.2
-----> Installing SQLite3
-----> Installing requirements with pip
 !     Your Django version is nearing the end of its community support.
 !     Upgrade to continue to receive security updates and for the best experience with Django.
 !     For more information, check out https://www.djangoproject.com/download/#supported-versions
       Collecting Django==1.11.29
         Downloading Django-1.11.29-py2.py3-none-any.whl (6.9 MB)
       Collecting coverage==4.5.4
         Downloading coverage-4.5.4-cp36-cp36m-manylinux1_x86_64.whl (205 kB)
       Collecting pytz
         Downloading pytz-2021.1-py2.py3-none-any.whl (510 kB)
       Installing collected packages: pytz, Django, coverage
       Successfully installed Django-1.11.29 coverage-4.5.4 pytz-2021.1
-----> $ python manage.py collectstatic --noinput
       61 static files copied to '/workspace/static'.

-----> Discovering process types
       Procfile declares types     -> (none)
===> EXPORTING
Adding layer 'heroku/python:profile'
Adding 1/1 app layer(s)
Adding layer 'launcher'
Adding layer 'config'
Adding label 'io.buildpacks.lifecycle.metadata'
Adding label 'io.buildpacks.build.metadata'
Adding label 'io.buildpacks.project.metadata'
Warning: default process type 'web' not present in list []
*** Images (1de89df98f60):
      python-sample
Adding cache layer 'heroku/python:shim'
Successfully built image python-sample

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docker images |grep python-sample

python-sample                     latest              39a646c853c2        41 years ago        756MB

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docker run --rm -p 8000:8000 python-sample  python manage.py runserver 0.0.0.0:8000

Performing system checks...

System check identified no issues (0 silenced).

You have 13 unapplied migration(s). Your project may not work properly until you apply the migrations for app(s): admin, auth, contenttypes, sessions.
Run 'python manage.py migrate' to apply them.
February 04, 2021 - 08:33:02
Django version 1.11.29, using settings 'project.settings'
Starting development server at http://0.0.0.0:8000/
Quit the server with CONTROL-C.