docker dockerfile setup.py requirements.txt

How to copy requirements.txt and setup.py files into docker image from parent folder

Here is the directory structure of my project:Directory tree

From the backend folder, I want to create a Docker image that loads the setup.py and requirements.txt files which are in the parent folder. Additionally, I want to load the src/ folder which is also in the parent folder. Here is the content of setup.py: https://github.com/ahmedaao/design-autonomous-car/blob/master/setup.py and here is the content of fastapi_app.py: https://github.com/ahmedaao/design-autonomous-car/blob/master/backend_app.py

Here is Dockerfile:

FROM python:3.10.12

WORKDIR /app

COPY ./fastapi_app.py /app/
COPY ./../requirements.txt /app/
COPY ./../src/ /app/src
COPY ./../setup.py /app/

RUN pip install --no-cache-dir -r requirements.txt

EXPOSE 8000

CMD ["uvicorn", "fastapi_app:app", "--host", "0.0.0.0", "--port", "8000"]

When I try to build the image with: sudo docker build -t test . I have this output: Output from docker build

Maybe you can help to solve this problem. Thanks

You can view the Dockerfile I tested above.

Solution

Your docker build command is run from the backend/ directory. It might make more sense to run it from the project root.

If your project is structured like this (from your screenshot):

├── backend
│   ├── Dockerfile
│   └── fastapi_app.py
├── requirements.txt
├── setup.py
└── src
    ├── __init__.py
    └── metrics.py

Then perhaps it might make more sense to formulate your Dockerfile like this:

FROM python:3.10.12

WORKDIR /app

COPY backend/fastapi_app.py /app/
COPY requirements.txt /app/
COPY src/ /app/src
COPY setup.py /app/

RUN pip install --no-cache-dir -r requirements.txt

EXPOSE 8000

CMD ["uvicorn", "fastapi_app:app", "--host", "0.0.0.0", "--port", "8000"]

You would then build the image from the project root:

docker build -f backend/Dockerfile -t test .

This would be a good approach if you are going to have multiple Dockerfile in the project (perhaps you will have a frontend/Dockerfile as well?).

Alternatively, if there will just be a single image, you could move the Dockerfile to the project root and then your build command would simplify to:

docker build -t test .

Either approach will get you around the problem of trying to copy files from outside of the build context.

Update

In response to question in comments and looking at https://github.com/ahmedaao/design-autonomous-car.

You can reduce the size of the image by adding a specific requirements.txt into the backend/ folder. Something like this should do it:

uvicorn==0.29.0
numpy==1.26.4
fastapi==0.110.1
pillow==10.2.0
python-dotenv==1.0.1
tensorflow==2.15.0.post1

Then update your Dockerfile with:

COPY backend/requirements.txt /app/

The resulting image would then be around 2.67 GB. Unfortunately it's the tensorflow package that's bloating the image. Without that the size drops to 1.11 GB.