create a test notebook to reduce import errors about notebooks

[jreiberkyle]

This is being blocked on an issue I am having where one computer cannot build the docker image, the other can build it. Both are trying to build against the master branch, both use docker build --no-cache -t planet-notebooks:test .. Failing system is docker desktop 2.2.0.3, OSX 10.15.3. Successful system is docker desktop 2.2.0.5, OSX 10.14.6. Both on the same network.

Failed build end of log:

Step 6/9 : RUN conda config --set channel_priority strict &&     conda install -y -c conda-forge --file /tmp/requirements.txt
 ---> Running in 01d54cf7c913
Collecting package metadata (current_repodata.json): ...working... done
Solving environment: ...working... failed with initial frozen solve. Retrying with flexible solve.
Solving environment: ...working... failed with repodata from current_repodata.json, will retry with next repodata source.
Collecting package metadata (repodata.json): ...working... done
Solving environment: ...working... failed with initial frozen solve. Retrying with flexible solve.
Solving environment: ...working... Killed
The command '/bin/sh -c conda config --set channel_priority strict &&     conda install -y -c conda-forge --file /tmp/requirements.txt' returned a non-zero code: 137

Succeeded build step 6/9:

Step 6/9 : RUN conda config --set channel_priority strict &&     conda install -y -c conda-forge --file /tmp/requirements.txt
 ---> Running in 0f6b58123455
Collecting package metadata (current_repodata.json): ...working... done
Solving environment: ...working... failed with initial frozen solve. Retrying with flexible solve.
Solving environment: ...working... failed with repodata from current_repodata.json, will retry with next repodata source.
Collecting package metadata (repodata.json): ...working... done
Solving environment: ...working... failed with initial frozen solve. Retrying with flexible solve.
Solving environment: ...working... done

[jreiberkyle]

Tried:

• run docker system prune -a on failing system, still fails
• run docker system prune -a on succeeding system, still succeeds
• update docker to 2.2.0.5 on failing system, whoa worked! details =>

Step 6/9 (which failed before):

Step 6/9 : RUN conda config --set channel_priority strict &&     conda install -y -c conda-forge --file /tmp/requirements.txt
 ---> Running in 1b1cdc7a3aa5
Collecting package metadata (current_repodata.json): ...working... done
Solving environment: ...working... failed with initial frozen solve. Retrying with flexible solve.
Solving environment: ...working... failed with repodata from current_repodata.json, will retry with next repodata source.
Collecting package metadata (repodata.json): ...working... done
Solving environment: ...working... failed with initial frozen solve. Retrying with flexible solve.
Solving environment: ...working... done