Update docker file for cellranger

[TomKellyGenetics]

Cellranger requires a specific implementation of tSNE. See PR #5 and #7 for related changes.

Many thanks to contributing to nf-core/demultiplex!

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• This comment contains a description of changes (with reason)
• If you've fixed a bug or added code that should be tested, add tests!
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[TomKellyGenetics]

I consider this repository stable now. It runs the test job locally. All that's left is configuring GitHub Integrations (autobuild and autotest). https://github.com/TomKellyGenetics/cellranger_clean/
This applies to these as well: PR #5 PR #7

[drpatelh]

Thanks for voluntarily coming in to suggest these changes @TomKellyGenetics 😎 . We should get an automated build on Dockerhub once this PR is merged. Once the container has build successfully I will most likely switch off the autobuilds due to these crazy dependency issues. I think it will be fine to have a static version of the container for now as long as its working!

[drpatelh]

Build is still failing because Dockerhub cant find requirements.txt:

---> b52b89f29318
Step 12/31 : COPY requirements.txt /opt/requirements.txt
COPY failed: stat /var/lib/docker/tmp/docker-builder130847410/requirements.txt: no such file or directory

[drpatelh]

I realised its probably much easier to just get the Docker image you have kindly provided on Dockerhub @TomKellyGenetics . Hope thats ok?
d16ce50

[TomKellyGenetics]

I think this is because it requires a "requirements.txt" in the working directory when docker build is running. For example this one https://github.com/TomKellyGenetics/cellranger_clean/blob/master/requirements.txt

Build is still failing because Dockerhub cant find requirements.txt:

---> b52b89f29318
Step 12/31 : COPY requirements.txt /opt/requirements.txt
COPY failed: stat /var/lib/docker/tmp/docker-builder130847410/requirements.txt: no such file or directory

I'm okay with this and intend to leave it stable for my purposes (a lot of dependencies are current versions or specific commits to avoid updates breaking it). Credit should go to the original developers of cellranger for releasing it open-source and to @mckinsel for building a docker image of an older version: https://github.com/mckinsel/cellranger_clean

I realised its probably much easier to just get the Docker image you have kindly provided on Dockerhub @TomKellyGenetics . Hope thats ok?
d16ce50