I run my django app in Docker. I recently tried running collecstatic and instead was given this error code:

>docker-compose exec web python manage.py collectstatic

Traceback (most recent call last):
  File "/code/manage.py", line 22, in <module>
    main()
  File "/code/manage.py", line 18, in main
    execute_from_command_line(sys.argv)
  File "/usr/local/lib/python3.11/site-packages/django/core/management/__init__.py", line 442, in execute_from_command_line
    utility.execute()
...

PermissionError: [Errno 13] Permission denied: '/code/static/admin/img/tooltag-arrowright.bbfb788a849e.svg.gz'

I added a USER at the end of my Dockerfile so that the USER isn’t root which I know is a security vulnerability. Here is my Dockerfile:

# Pull base image
FROM python:3.11.4-slim-bullseye

# Set environment variables
ENV PIP_NO_CACHE_DIR off
ENV PIP_DISABLE_PIP_VERSION_CHECK 1
ENV PYTHONUNBUFFERED 1
ENV PYTHONDONTWRITEBYTECODE 1
ENV COLUMNS 80

#install Debian and other dependencies that are required to run python apps(eg. git, python-magic).
RUN apt-get update 
  && apt-get install -y --force-yes python3-pip ffmpeg git libmagic-dev libpq-dev gcc 
    && rm -rf /var/lib/apt/lists/*

# Set working directory for Docker image
WORKDIR /code/

# Install dependencies
COPY requirements.txt .
RUN pip install -r requirements.txt

# Copy project
COPY . .

# Create a custom non-root user
RUN useradd -m example-user

# Grant necessary permissions to write directories and to user 'example-user'
RUN mkdir -p /code/media /code/static && 
    chown -R example-user:example-user

 1. List item

 /code/media /code/static

# Change permissions of /code directory
RUN chmod -R 755 /code

# Switch to the non-root user. All this avoids running Celery with root/superuser priviledges which is a security risk
USER example-user

And my docker-compose-yml file:

#version: "3.9"
services:
  web:
    build: .
    #command: python /code/manage.py runserver  0.0.0.0:8000
    command: gunicorn mysite.wsgi -b 0.0.0.0:8000 --reload
    volumes:
      - .:/code
    ports:
      - 8000:8000
    depends_on:
      - db
      - redis
      - celery
    environment:
      -  "DJANGO_SECRET_KEY=scret_key"
      -  "DJANGO_DEBUG=True"
      -  "DJANGO_SECURE_SSL_REDIRECT=False"
      -  "DJANGO_SECURE_HSTS_SECONDS=0" 
      -  "DJANGO_SECURE_HSTS_INCLUDE_SUBDOMAINS=False"
      -  "DJANGO_SECURE_HSTS_PRELOAD=False"
      -  "DJANGO_SESSION_COOKIE_SECURE=False" # new
      -  "ACCESS_KEY_ID=scret_id"
      -  "SECRET_ACCESS_KEY=scret_key"
      -  "STORAGE_BUCKET_NAME=bucket"
      -  "S3_CUSTOM_DOMAIN=domain"
      - CELERY_BROKER_URL=redis://redis:6379/0
      - CELERY_RESULT_BACKEND=redis://redis:6379/0
      
    user: example-user
  db:
    image: postgres:13
    volumes:
      - postgres_data:/var/lib/postgresql/data/
    environment:
      - "POSTGRES_HOST_AUTH_METHOD=trust"
  redis:
    image: redis:6
    ports:
      - 6379:6379
  celery:
    build: .
    command: celery -A mysite worker --loglevel=info
    volumes:
      - .:/code
    depends_on:
      - redis
      - db
    environment:
      -  "DJANGO_SECRET_KEY=scret_key"
      -  "DJANGO_DEBUG=True"
      -  "DJANGO_SECURE_SSL_REDIRECT=False"
      -  "DJANGO_SECURE_HSTS_SECONDS=0" 
      -  "DJANGO_SECURE_HSTS_INCLUDE_SUBDOMAINS=False"
      -  "DJANGO_SECURE_HSTS_PRELOAD=False"
      -  "DJANGO_SESSION_COOKIE_SECURE=False" # new
      -  "ACCESS_KEY_ID=scret_id"
      -  "SECRET_ACCESS_KEY=scret_key"
      -  "STORAGE_BUCKET_NAME=name"
      -  "S3_CUSTOM_DOMAIN=domain"
      - CELERY_BROKER_URL=redis://redis:6379/0
      - CELERY_RESULT_BACKEND=redis://redis:6379/0

    user: example-user
volumes:
  postgres_data:

I also added chmod -R 755 /code/media /code/static however it still did not work and the results are the same. When I run docker-compose exec web ls -l /code/static the results indicate that all files/folders are being run as root execpt staticfiles.json:

total 16
drwxrwxrwx 1 root      root       4096 Apr  5 05:42 admin
drwxrwxrwx 1 root      root       4096 Sep 21 22:36 css
drwxrwxrwx 1 root      root       4096 Sep 21 22:36 human
drwxrwxrwx 1 root      root       4096 Sep 18 18:42 img
-rw-r--r-- 1 user-mani user-mani 13091 Sep 21 22:36 staticfiles.json
drwxrwxrwx 1 root      root       4096 Sep 21 22:36 transcribe