Adding ssocr to docker to support Seven Segments Display

[MartyTremblay]

Description:

Cloning and building ssocr in Docker image to support Seven Segments Display Image Processing Component

Related issue (if applicable): fixes #7774

Pull request in home-assistant.github.io with documentation (if applicable):

Example entry for configuration.yaml (if applicable):

N/A

Checklist:

If user exposed functionality or configuration variables are added/changed:

• [N/A] Documentation added/updated in home-assistant.github.io

If the code communicates with devices, web services, or third-party tools:

• [N/A] Local tests with tox run successfully. Your PR cannot be merged unless tests pass
• [N/A] New dependencies have been added to the REQUIREMENTS variable ([example][ex-requir]).
• [N/A] New dependencies are only imported inside functions that use them ([example][ex-import]).
• [N/A] New dependencies have been added to requirements_all.txt by running script/gen_requirements_all.py.
• [N/A] New files were added to .coveragerc.

If the code does not interact with devices:

• [N/A] Local tests with tox run successfully. Your PR cannot be merged unless tests pass
• [N/A] Tests have been added to verify that the new code works.

[homeassistant]

Hi @MartyTremblay,

It seems you haven't yet signed a CLA. Please do so here.

Once you do that we will be able to review and accept this pull request.

Thanks!

[mention-bot]

@MartyTremblay, thanks for your PR! By analyzing the history of the files in this pull request, we identified @michaelarnauts, @balloob and @mathewpeterson to be potential reviewers.

[MartyTremblay]

It appears that the CI tests failed for other reasons.

[balloob]

In the docs it states that we can just do apt-get install ssocr. I prefer we add that instead of having to add a new install script.

[MartyTremblay]

Yes, that's correct. However, when I did an apt-get update and then apt-get install ssocr in my hass container, the package manager complained that it did not find ssocr to be installed. I'm guessing that the python:3.6/jessie docker image that hass is based on is missing a repo.

I'll explore this further and will report back soon.

[MartyTremblay]

Just confirmed that ssocr is not part of any debian-based distros. The only way to install it on Linux is to build it.
https://www.unix-ag.uni-kl.de/~auerswal/ssocr/ (Official Site)

https://packages.debian.org/search?searchon=contents&keywords=ssocr&mode=filename&suite=stable&arch=any (Debian Package Search)

[balloob]

Alright, looks fine then!