Docker "Failed to solve: Canceled: context canceled" when loading build context

Question

When running docker-compose up --build I'm constantly getting this error.

 => [web internal] load build definition from Dockerfile                                                           0.0s
 => => transferring dockerfile: 1.58kB                                                                             0.0s
 => [web internal] load .dockerignore                                                                              0.0s
 => => transferring context: 279B                                                                                  0.0s
 => [web internal] load metadata for docker.io/library/python:3.8                                                  0.8s
 => CANCELED [web  1/14] FROM docker.io/library/python:3.8@sha256:7a82536f5a2895b70416ccaffc49e6469d11ed8d9bf6bcf  0.3s
 => => resolve docker.io/library/python:3.8@sha256:7a82536f5a2895b70416ccaffc49e6469d11ed8d9bf6bcfc52328faeae7c77  0.2s
 => => sha256:795c73a8d985b6d1b7e5730dd2eece7f316ee2607544b0f91841d4c4142d9448 7.56kB / 7.56kB                     0.0s
 => => sha256:7a82536f5a2895b70416ccaffc49e6469d11ed8d9bf6bcfc52328faeae7c7710 1.86kB / 1.86kB                     0.0s
 => => sha256:129534c722d189b3baf69f6e3289b799caf45f75da37035c854100852edcbd7d 2.01kB / 2.01kB                     0.0s
 => CANCELED [web internal] load build context                                                                     0.1s
 => => transferring context: 26.00kB                                                                               0.0s
failed to solve: Canceled: context canceled

This has been happening since yesterday, before my images would build and my application would run just fine.

1. Tried identifying any processes/apps that interfere with the docker build process
2. Reinstalled Docker Desktop completely
3. Tried changing Python versions inside my Dockerfile

I'm quite lost as to what is going wrong, I've used python3.8 and python3.9 without issues before. Below is my dockerfile and docker-compose.

# Use an official Python runtime as the base image
FROM python:3.8

# Set environment variables
ENV PYTHONDONTWRITEBYTECODE 1
ENV PYTHONUNBUFFERED 1
ENV NODE_ENV production

# Create and set the working directory
WORKDIR /app

# Install system dependencies
RUN apt-get update && apt-get install -y --no-install-recommends \
        default-mysql-client \
        software-properties-common \
        curl \
        gnupg \
    && curl -fsSL https://deb.nodesource.com/gpgkey/nodesource.gpg.key | gpg --dearmor -o /usr/share/keyrings/nodesource.gpg \
    && echo "deb [signed-by=/usr/share/keyrings/nodesource.gpg] https://deb.nodesource.com/node_20.x bullseye main" | tee /etc/apt/sources.list.d/nodesource.list \
    && apt-get update && apt-get install -y nodejs \
    && apt-get clean \
    && rm -rf /var/lib/apt/lists/*

# Verify that Node.js and npm are installed
RUN node --version
RUN npm --version

# Install Python dependencies
COPY requirements.txt .
RUN pip install --upgrade pip && \
    pip install -r requirements.txt

# Install Tailwind CSS and its peer dependencies
COPY package.json package-lock.json ./
RUN npm install

# Copy the current directory contents into the container
COPY . .

# Build the Tailwind CSS
RUN npm run build:css

RUN npm run watch:css

COPY entrypoint.sh ./entrypoint.sh
RUN chmod +x ./entrypoint.sh

ENTRYPOINT ["./entrypoint.sh"]

# The main command to run when the container starts
CMD ["gunicorn", "--bind", ":8000", "bmlabs.wsgi:application"]

Docker-compose

services:
  db:
    image: mysql:5.7
    volumes:
      - db_data:/var/lib/mysql
    restart: always
    environment:
      MYSQL_ROOT_PASSWORD: 
      MYSQL_DATABASE:
      MYSQL_USER: 
      MYSQL_PASSWORD:
    networks:
      - backend

  web:
    build: .
    volumes:
      - .:/app
      - static_volume:/app/staticfiles
      - media_volume:/app/mediafiles
    depends_on:
      - db
    networks:
      - backend
    expose:
      - "8000"

  nginx:
    image: nginx:alpine
    ports:
      - "80:80"
    volumes:
      - ./nginx/nginx.conf:/etc/nginx/nginx.conf:ro
      - ./nginx/bmlabs.conf:/etc/nginx/conf.d/bmlabs.conf:ro
      - static_volume:/app/staticfiles
      - media_volume:/app/mediafiles
    depends_on:
      - web
    networks:
      - backend

networks:
  backend:

volumes:
  db_data:
  cache_data:
  static_volume:
  media_volume:

I am on Windows 10.

Answer 1

Altough downgrading docker worked, the actual problem was that I didn't exclude node_modules in Dockerignore. I had been running the containers fine for quite a long time.

After purging all containers and images and adding the node_modules/ line to my .dockerignore it fixed it.

I'm guessing the error had to do with the amount of files inside certain directories.