Include caching

[Beanow]

We could either:

• Look into including caching as part of the action itself.
• Add it to the example workflow.

Here's an example of how I implemented caching previously

https://github.com/MetaFam/TheSource/blob/f96bc3f66106ed4341d674b5a37a1fce8035c922/.github/workflows/generate-cred.yml#L19-L27

      - name: SourceCred Cache
        uses: actions/cache@v1
        with:
          # cred-action uses *workspace*/sourcecred_data as it's SOURCECRED_DIRECTORY.
          # Only store the cache from that.
          path: sourcecred_data/cache
          key: SC_CACHE-${{ hashFiles('**/project.json') }}-${{ github.run_id }}
          restore-keys: |
            SC_CACHE-${{ hashFiles('**/project.json') }}-
            SC_CACHE-

[vsoch]

This feels like something that a deployment of an instance might want to customize, and since it's already packaged nicely in actions/cache@v1 I think we'd want to add it via the workflow file (and provide examples up the wazoo so the user can just copy paste and have it).

[Beanow]

Actually on that note, what did you think of the idea to use a template repository?

[vsoch]

100%.