Unable to pass quoted strings to the python script within a docker container

Question

Unable to pass quoted strings to the python script within a docker container. The quoted string is split as two independent items of the sys.argv vector.

The expected behaviour of the python script is as follows.

check.py --coverage 'Hello World' --blabla something
All Raw Arguments
['--coverage', 'Hello World', '--blabla', 'something']
All Args
Namespace(blabla='something', coverage='Hello World')

Print Coverage
Hello World

Print blabla
something

The same script when I have it within the docker container and run using docker run , the text inside quotes is split into multiple vars of the list.

docker run --rm -i sample --coverage 'Hello World' --blabla something
All Raw Arguments
['--coverage', 'Hello', 'World', '--blabla', 'sometext']
usage: check.py [-h] [--coverage COVERAGE] [--blabla BLABLA]
check.py: error: unrecognized arguments: World

Note The difference in the sys.argv vector when the script is run normally and from within the docker

['--coverage', 'Hello World', '--blabla', 'something']
['--coverage', 'Hello', 'World', '--blabla', 'sometext']

In the first instance it is only one item 'Hello World', whereas when the script is inside docker it is 'Hello', 'World'

My sample dockerfile definition is as follows

FROM sample_base

ENTRYPOINT ["/check.py"]
CMD ["--help"]

Breaking my head for the past couple of hours. Any help is much appreciated

Tried all different combinations such as follows.

docker run --rm -i sample '--coverage "Hello\\\ World" --blabla sometext'
docker run --rm -i sample --coverage "Hello\\\ World" --blabla sometext
docker run --rm -i sample --coverage "Hello\ World" --blabla sometext
docker run --rm -i sample --coverage \"Hello World\" --blabla sometext
docker run --rm -i sample --coverage \"\"Hello World\"\" --blabla sometext
docker run --rm -i sample --coverage "\"\"Hello World\"\"" --blabla sometext
export COVERAGE="Hello World"
docker run --rm -i sample --coverage $COVERAGE --blabla sometext
docker run --rm -i sample --coverage ${COVERAGE} --blabla sometext
docker run --rm -i sample --coverage "$COVERAGE" --blabla sometext
docker run --rm -i sample --coverage "${COVERAGE}" --blabla sometext

Note All the above combination were tried with single quotes (') as well.

Answer 1

Try this:

docker run --rm -i sample sh -c '/check.py --coverage $COVERAGE --blabla sometext'

or bash

Answer 2

Did you also tried docker run --rm -i sample --coverage "\\"Hello World\\"" --blabla sometext ?

I've had some problems with spaces using docker too and had to escape the quotes even though the code interpreter marked it as an error.