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Run python script using a docker image

I downloaded a python script and a docker image containing commands to install all the dependencies. How can I run the python script using the docker image?

Copy python file in Docker image then execute -
docker run image-name PATH-OF-SCRIPT-IN-IMAGE/script.py
Or you can also build the DockerFile by using the RUN python PATH-OF-SCRIPT-IN-IMAGE/script.py inside DockerFile.
How to copy container to host
docker cp <containerId>:/file/path/within/container /host/path/target
How to copy host to the container
docker cp /host/local/path/file <containerId>:/file/path/in/container/file

Run in interactive mode:
docker run -it image_name python filename.py
or if you want host and port to be specified:
docker run -it -v filename.py:filename.py -p 8888:8888 image_name python filename.py

Answer
First, Copy your python script and other required files to your docker container.
docker cp /path_to_file <containerId>:/path_where_you_want_to_save
Second, open the container cli using docker desktop and run your python script.

The best way, I think, is to make your own image that contains the dependencies and the script.
When you say you've been given an image, I'm guessing that you've been given a Dockerfile, since you talk about it containing commands.
Place the Dockerfile and the script in the same directory. Add the following lines to the bottom of the Dockerfile.
# Existing part of Dockerfile goes here
COPY my-script.py .
CMD ["python", "my-script.py"]
Replace my-script.py with the name of the script.
Then build and run it with these commands
docker build -t my-image .
docker run my-image

How to send files as arguments in docker for python cli application?

I'm trying to send files as an argument in python3 cli app (which uses argp arse for parsing) which is hosted in docker. But I'm getting OSError:
Error opening b'input_file.txt' when I perform docker run -t
input_file.txt
I tried:
docker run -t docker_image_name input_file.txt
My docker file has entry point as:
ENTRYPOINT [ "python", "/src/cli_app.py" ]

You're telling your python application to look for input_file.txt, but that file doesn't exist in the container. You're not passing a file as is, just an argument/parameter. Try the following to mount your local file (I'm assuming it's in your working directory) into the container:
docker run -it -v $(pwd)/input_file.txt:/tmp/input_file.txt docker_image_name /tmp/input_file.txt

docker run docker_image_name -e IP_FILE_NAME="input_file.txt"
In your python code access the filename as environment variable $IP_FILE_NAME. This is considering the input_file.txt is present in the container. Use COPY command to copy the file from the machine you use to build to the container.
COPY input_file.txt /src/input_file.txt

How to run docker command in Python SDK

I am using python SDK package to run docker from python.
Here is the docker command I tried to run using python package:
docker run -v /c/Users/msagovac/pdf_ocr:/home/docker jbarlow83/ocrmypdf-polyglot --skip-text 0ce9d58432bf41174dde7148486854e2.pdf output.pdf
Here is a python code:
import docker
client = docker.from_env()
client.containers.run('jbarlow83/ocrmypdf-polyglot', '--skip-text "0ce9d58432bf41174dde7148486854e2.pdf" "output.pdf"', "-v /c/Users/msagovac/pdf_ocr:/home/docker")
Error says file ot found. I am not sure where to set run options:
-v /c/Users/msagovac/pdf_ocr:/home/docker

Try with named parameters:
client.containers.run(
image='jbarlow83/ocrmypdf-polyglot',
command='--skip-text "0ce9d58432bf41174dde7148486854e2.pdf" "output.pdf"',
volumes={'/c/Users/msagovac/pdf_ocr': {'bind': '/home/docker', 'mode': 'rw'}},
)
Also it seems that the path of the volume to mount is incorrect, try with C:/Users/msagovac/pdf_ocr

Run ansible-playbook from code/command line connecting to docker container

I am using this:
Specify docker containers in /etc/ansible/hosts file
to run my ansible playbooks against a docker container.
But is there any way to avoid having a physical /etc/ansible/hosts file with the information about the container? E.g. run it from code where this information can be configured?
I looked at:
Running ansible-playbook using Python API
but when looking at the answers I see variables pointing to physical files, e.g.:
inventory = Inventory(loader=loader, sources='/home/slotlocker/hosts2')
playbook_path = '/home/slotlocker/ls.yml'
So not really sure why that is better than simply just calling from command line without using the Python ansible API.

May be install Ansible in Docker container and then run it locally inside the container. For example in the Dockerfile, include:
# Install Ansible
RUN pip install ansible
COPY ansible /tmp/ansible
# Run Ansible to configure the machine
RUN cd /tmp/ansible && ansible-playbook -i inventory/docker example_playbook.yml

Run shell script inside Docker container from another Docker container?

If I am on my host machine, I can kickoff a script inside a Docker container using:
docker exec my_container bash myscript.sh
However, let's say I want to run myscript.sh inside my_container from another container bob. If I run the command above while I'm in the shell of bob, it doesn't work (Docker isn't even installed in bob).
What's the best way to do this?

Simply launch your container with something like
docker run -it -v /var/run/docker.sock:/var/run/docker.sock -v /usr/bin/docker:/usr/bin/docker ...
and it should do the trick