import argparse
parser = argparse.ArgumentParser()
parser.add_argument(
'--strat',
type=str,
)
args = parser.parse_args()
strat = args.strat
I would like to right my docker-compose.yml file such as I would just pass my argument from there.
I did
version: "3.3"
services:
mm:
container_name: mm
stdin_open: true
build: .
context: .
dockerfile: Dockerfile
args:
strat: 1
and my docker file
FROM python:3.10.7
COPY . .
RUN pip3 install --upgrade pip
RUN pip3 install -r requirements.txt
CMD python3 main.py
But it does not work.
Any idea what I should change pelase?
2
Answers
You need to update docker file to process the build arguments and remap them to environment variables to be processed by CMD. Try something like the following:
But personally I would consider completely switching to environment variables instead of build arguments (so there is no need to rebuild image for every argument change).
The
args
thingy is for "build time" only.If you want to run your already built image with different arguments, use environment variables or just pass them as you would with a regular binary.
like:
docker compose run backend ./manage.py makemigrations
here you see that the
./manage.py
andmakemigrations
are two arguments passed tobackend
service defined in docker-compose.yml