Issue with Docker Build: "Could not open requirements file: No such file or directory"

Docker Desktop
,
1

Hello,

I’m encountering a problem with a Docker build process, and I’m seeking assistance to diagnose and resolve the issue.

Problem Description:
I have a Dockerfile and a requirements.txt file in the same directory. However, when I attempt to build the Docker image using the docker build command, I receive the following error:

ERROR [4/4] RUN pip install -r requirements.txt:
Could not open requirements file: [Errno 2] No such file or directory: 'requirements.txt'

I’ve tried various troubleshooting steps, including confirming the directory structure, file permissions, filename case sensitivity, and using the --no-cache option, but the problem persists.

Directory Structure:

  • Dockerfile
  • requirements.txt
  • app.py

Dockerfile Contents:

# Use an official Python runtime as a parent image
FROM python:3.8

# Set the working directory
WORKDIR /template_automating_in_aws

# Copy the current directory contents into the container at /app
COPY . /app

# Install the required packages specified in requirements.txt
RUN pip install -r requirements.txt

# Make port 80 available to the world outside this container
EXPOSE 80

# Define environment variable
ENV KEY password_easy

# Run app.py when the container launches
CMD ["python", "app.py"]

Steps Taken:

  • Checked file permissions for requirements.txt.
  • Confirmed directory structure.
  • Checked for .dockerignore exclusions. (I don´t create ones)
  • Ensured correct context for docker build.
  • Restarted the computer.
  • Tried building with --no-cache.

System Information:

  • OS: Macbook Air 16GB
  • Docker Version: 24.0.6

If anyone has encountered a similar issue or has any insights into what might be causing this error, I would greatly appreciate any help and guidance to resolve it.

Thank you in advance for your assistance.

2

I’m not sure why you expect it to work or what you meant by checking directory structure, but your workdir is clearly not /app/ where you copied your requirements.txt file. If you want to make sure you always refer to the right file, use full path like

RUN pip install -r /app/requirements.txt
4

When I said app directory I mean template_automating_in_aws, where my app is stored in local.

Sorry if the comment wasnt clear I just adjusted it. Thank you

5

I was writing about the facts in your Dockerfile in which you copy files to a folder (/app) but your WORKDIR is another folder (your aws folder) so that’s where pip would look for the requirements.txt but you didn’t copy anything to that.