Mattermost-Trello integration

Hi! I’m running a Mattermost instance in an old-school marketplace install and am trying to install the Matterllo integration to connect to our Trello boards. And I am utterly stuck.

I am attempting to use the Docker install instructions and get through retrieving and creating the image fine, and after a good deal of trial and error, I got through the “run the container” step, which returned a long string that apparently designates the container. But then I get stuck on the third step:

# apply the migration
$ docker exec matterllo python loaddata admin

– the result of which is an error message saying that Container $longstring is not running. But when I attempt to re-run the run command, it tells me that /matterllo is already in use by container $longstring. So based on some searching around, I’ve figured out that I can start the container with sudo docker start $longstring and then run the command above, but when I do I get this error:

OCI runtime exec failed: exec failed: container_linux.go:349: starting container process caused "exec: \"python\": executable file not found in $PATH": unknown

Here’s what’s in the Dockerfile:

FROM python:2

RUN mkdir -p /usr/src/app
WORKDIR /usr/src/app

COPY requirements_base.txt /usr/src/app
RUN pip install --no-cache-dir -r requirements_base.txt

COPY . /usr/src/app

RUN python makemigrations

CMD python migrate && python runserver

I’m more or less blundering around in the dark at this point, so if you have any suggestions for what to try next I’d be grateful…

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