App Runner Django Deployment Error Python Version3.11

Question

I'm trying to deploy my Django backend to AppRunner.

My apprunner.yml is this;

`
```
version: 1.0
runtime: python311
build:
  commands:
    build:        
      - pip3 install pipenv
      - pipenv install
    post-build:
      - python3 manage.py test
  env:
    - name: DEBUG
      value: "on"
    - name: SECRET_KEY
      value: *****
    - name: ALLOWED_HOSTS
      value: "*"
run:
  runtime-version: 3.11
  pre-run:  
    - pip3 install pipenv
    - pipenv install
  command: pipenv run gunicorn django_apprunner.wsgi --log-file -
  network: 
    port: 8000
    env: 8000  
  env:
    - name: DEBUG
      value: "on"
    - name: SECRET_KEY
      value: ****
    - name: ALLOWED_HOSTS
      value: "*"

```

In the Application Log File this error comes;

```
 raise ImportError(
ImportError: Couldn't import Django. Are you sure it's installed and available on your PYTHONPATH environment variable? Did you forget to activate a virtual environment?
```

I could not find any solution for this, is there any idea to fix this issue ?

Accepted Answer

Why I really do not know, I run the build code under the pre-run and successfully deploy and run

```
version: 1.0
runtime: python311
build:
  commands:
    build:
      - python3.11 -m ensurepip --upgrade
      - python3.11 -m pip install Django
      - python3.11 -m pip install -r requirements.txt
      - python3.11 -m pip install gunicorn
  env:
    - name: DEBUG
      value: "on"
    - name: SECRET_KEY
      value: "*"
    - name: ALLOWED_HOSTS
      value: "*"
run:
  runtime-version: 3.11
  pre-run:
    - pip3 install gunicorn
    - pip3 install -r requirements.txt
    - which gunicorn
  command: gunicorn app_runne.wsgir:application  --log-file -
  network: 
    port: 8000
    env: 8000  
  env:
    - name: DEBUG
      value: "on"
    - name: SECRET_KEY
      value: "*"
    - name: ALLOWED_HOSTS
      value: "*"

```

Answer

Hello, I also faced the same issue but somehow I resolved this issue. I was testing AWS App Runner for my security research work in post compromise scenario. Here's the [blog](https://blog.appsecco.com/getting-shell-and-data-access-in-aws-app-runner-3632e844bc77).

* App Runner doesn't natively manage virtual environments like `pipenv`. You need to ensure Django and its dependencies are installed within the build container itself.
* Remove the `pipenv` install commands from both `build` and `pre-run` sections. They're not necessary in this context.
* Include a command that installs Django and required dependencies directly using `pip3 install Django` (replace Django with your specific package names) in the build section.

Use the below YAML code once and check if `pip` is also upgraded. Hope this helps!

```YAML
version: 1.0
runtime: python311
build:
  commands:
    - python3.11 -m ensurepip --upgrade # Upgrade pip (optional)
    - pip3 install Django # Install Django and dependencies
    - python3 manage.py test
  env:
    - name: DEBUG
      value: "on"
    - name: SECRET_KEY
      value: *****
    - name: ALLOWED_HOSTS
      value: "*"
run:
  runtime-version: 3.11
  command: pip3 install gunicorn django_apprunner.wsgi # Install gunicorn at runtime
  pre-run: [] # Remove pre-run section
  command: gunicorn django_apprunner.wsgi --log-file -
  network: 
    port: 8000
    env: 8000  
  env:
    - name: DEBUG
      value: "on"
    - name: SECRET_KEY
      value: ****
    - name: ALLOWED_HOSTS
      value: "*"

```

Answer

yeah please try this

Install Gunicorn During Build: Ensure Gunicorn is installed during the build phase using `pip3 install gunicorn`. This ensures it's available in the container's environment.

Check File Paths and Permissions: Double-check that the path to `django_apprunner.wsgi` is correct and that the file has execute permissions.

```YAML
version: 1.0
runtime: python311
build:
  commands:
    - python3.11 -m ensurepip --upgrade
    - pip3 install Django # Install Django and dependencies
    - pip3 install gunicorn # Install gunicorn during build
    - python3 manage.py test
  env:
    - name: DEBUG
      value: "on"
    - name: SECRET_KEY
      value: *****
    - name: ALLOWED_HOSTS
      value: "*"
run:
  runtime-version: 3.11
  command: gunicorn django_apprunner.wsgi --log-file -
  network:
    port: 8000
    env: 8000
  env:
    - name: DEBUG
      value: "on"
    - name: SECRET_KEY
      value: ****
    - name: ALLOWED_HOSTS
      value: "*"

```

App Runner Django Deployment Error Python Version3.11

Relevant content