cache VS upload-artifact

> with no persistent storage

There's https://github.com/actions/cache though?

Use Cache Actions: GitHub Actions provides cache actions that simplify caching implementation. The @actions/cache JavaScript library is a popular choice for managing caching in workflows. It offers flexible options for storing and retrieving cache artifacts based on keys, scopes, and paths.

GitHub maintain a set of repos called actions. One of which is called cache.

By utilizing the actions/cache action action, we implemented a strategy to store and retrieve dependencies, preventing redundant installations.

I do think it's good practice to enable caching, such that your script doesn't hit RubyGems / pip / npm / etc every time it runs.

That way at least the automation activity stays entirely within the GitHub / Azure network.

It looks like you can do that for Ruby by adding this:

https://github.com/actions/cache/blob/master/examples.md#rub...

    - uses: ruby/setup-ruby@v1

➜ getting-started-with-act git:(master) act -j build WARN ⚠ You are using Apple M1 chip and you have not specified container architecture, you might encounter issues while running act. If so, try running it with '--container-architecture linux/amd64'. ⚠ [Node.js CI/build] 🚀 Start image=node:16-buster-slim [Node.js CI/build] 🐳 docker pull image=node:16-buster-slim platform= username= forcePull=false [Node.js CI/build] 🐳 docker create image=node:16-buster-slim platform= entrypoint=["tail" "-f" "/dev/null"] cmd=[] [Node.js CI/build] 🐳 docker run image=node:16-buster-slim platform= entrypoint=["tail" "-f" "/dev/null"] cmd=[] [Node.js CI/build] ☁ git clone 'https://github.com/actions/setup-node' # ref=v3 [Node.js CI/build] ☁ git clone 'https://github.com/actions/cache' # ref=v3 [Node.js CI/build] ☁ git clone 'https://github.com/actions/upload-artifact' # ref=v3 [Node.js CI/build] ⭐ Run Main actions/checkout@v3 [Node.js CI/build] 🐳 docker cp src=/Users/andrewevans/Documents/projects/getting-started-with-act/. dst=/Users/andrewevans/Documents/projects/getting-started-with-act [Node.js CI/build] ✅ Success - Main actions/checkout@v3 [Node.js CI/build] ⭐ Run Main Use Node.js 16.x [Node.js CI/build] 🐳 docker cp src=/Users/andrewevans/.cache/act/actions-setup-node@v3/ dst=/var/run/act/actions/actions-setup-node@v3/ [Node.js CI/build] 🐳 docker exec cmd=[node /var/run/act/actions/actions-setup-node@v3/dist/setup/index.js] user= workdir= [Node.js CI/build] 💬 ::debug::isExplicit: [Node.js CI/build] 💬 ::debug::explicit? false

You could try to find some point in the process where you can set up Actions caches with actions/cache, otherwise Container customization for Self-Hosted Runners is currently in Beta.

I would configure Github Actions cache so Docker doesn't have to compile all layers from scratch every time

In the copied example, npm caching is done via actions/cache@v2 action. But we can simplify our workflow by dropping this step and using built-in functionality for caching

Github's response was pretty bad. They changed the upload-artifacts workflow to no longer include hidden files _in a minor release_ and that broke thousands of workflows that required hidden files.

Github issue with angry comments: https://github.com/actions/upload-artifact/issues/602

upload-artifact

Here, the concept of "upload" is a little confusing. What the GitHub action upload-artifact does is to "copy" the jar file to a publicly accessible folder.

The content of the build destination folder folder needs is saved and transferred to the following jobs in the workflow. We do this with the Github actions actions/upload-artifact

The action for uploading the artifact doesn't do too much, but it takes care of all the nuance around GitHub Pages artifacts specifically. You can view the action's source here. It will tar the path (provided by the with option) and then call the upload artifact action. The artifact's name is github-pages and has a 1 day expiration. This artifact has the name and format required for the deploy action. It all just works (so far).

➜ getting-started-with-act git:(master) act -j build WARN ⚠ You are using Apple M1 chip and you have not specified container architecture, you might encounter issues while running act. If so, try running it with '--container-architecture linux/amd64'. ⚠ [Node.js CI/build] 🚀 Start image=node:16-buster-slim [Node.js CI/build] 🐳 docker pull image=node:16-buster-slim platform= username= forcePull=false [Node.js CI/build] 🐳 docker create image=node:16-buster-slim platform= entrypoint=["tail" "-f" "/dev/null"] cmd=[] [Node.js CI/build] 🐳 docker run image=node:16-buster-slim platform= entrypoint=["tail" "-f" "/dev/null"] cmd=[] [Node.js CI/build] ☁ git clone 'https://github.com/actions/setup-node' # ref=v3 [Node.js CI/build] ☁ git clone 'https://github.com/actions/cache' # ref=v3 [Node.js CI/build] ☁ git clone 'https://github.com/actions/upload-artifact' # ref=v3 [Node.js CI/build] ⭐ Run Main actions/checkout@v3 [Node.js CI/build] 🐳 docker cp src=/Users/andrewevans/Documents/projects/getting-started-with-act/. dst=/Users/andrewevans/Documents/projects/getting-started-with-act [Node.js CI/build] ✅ Success - Main actions/checkout@v3 [Node.js CI/build] ⭐ Run Main Use Node.js 16.x [Node.js CI/build] 🐳 docker cp src=/Users/andrewevans/.cache/act/actions-setup-node@v3/ dst=/var/run/act/actions/actions-setup-node@v3/ [Node.js CI/build] 🐳 docker exec cmd=[node /var/run/act/actions/actions-setup-node@v3/dist/setup/index.js] user= workdir= [Node.js CI/build] 💬 ::debug::isExplicit: [Node.js CI/build] 💬 ::debug::explicit? false

Notice that already known commands like flutter pub get and flutter build apk (apk in case of Android; aab in case of iOS) now it shows up on our workflow. But, to upload the generated app file (artifact), we'll need to use the action upload-artifact@v1 and parse the build path which it will be storing the app file.