Python Flask Dockerfile
# syntax=docker/dockerfile:1
FROM python:3.8-slim-buster
WORKDIR /python-docker
# Copy just requirements first to create cached layer with deps
COPY requirements.txt requirements.txt
RUN pip3 install -r requirements.txt
# Now copy the rest of the source
COPY . .
CMD [ "python3", "-m" , "flask", "run", "--host=0.0.0.0"]
Notes:
- Creating a
.dockerignoreis recommended to prevent theCOPY . .line from copying too much (e.g. if you have avenvin the working directory)