Add --cache-to option to devcontainer build command

[yokonao]

Close #563

I added --cache-to option to devcontainer build command.

If buildx is used for building image, we can pass --cache-to option in order to export and reuse buildx cache.

Checks

• Create docker-container driver builx builder
  • docker buildx create --driver=docker-container --use
• Build with --cache-to option
  • node devcontainer.js build --workspace-folder . --cache-to=type=local,dest=/tmp/build-cache
• Confirm cache directory exists
  • ls /tmp/build-cache

❯ ls /tmp/build-cache
blobs  index.json  ingest  oci-layout

[yokonao]

@microsoft-github-policy-service agree

[joshspicer]

I've run CI on your changes and looks like there's a couple minor tweaks needed. Linter issues can be detected locally with yarn lint. There's also a test issue but that probably just needs some minor reworking

[yokonao]

Sorry! I fixed lint issue. Waiting for checks.
I think that tests fails has no association with this PR.

[yokonao]

@joshspicer
Thank you for checking on CI!
What should I do next before merging?

[joshspicer]

Thanks! I'll ask @chrmarti to take a quick peek to

[yokonao]

@chrmarti
Hi! Could you review this PR?

[chrmarti]

Thanks for the PR! Left a comment. Additionally:

• Please add a check and error at

  cli/src/spec-node/devContainersSpecCLI.ts

  Line 620 in eafbf64
  since it is not supported.

• Should the flag also be added at

  cli/src/spec-node/containerFeatures.ts

  Line 90 in eafbf64

  for (const buildArg in featureBuildInfo.buildArgs) {

  ? (This runs when the user has an image without a Dockerfile, but we still want to add features to the image.)

[yokonao]

Thanks for your review. I pushed two commits!

• check and raise with docker compose file and --cache-to
• append --cache-to also with an image without a Dockerfile

[chrmarti]

Approving PR, thanks!

@joshspicer / @samruddhikhandale Could you take another look? Thanks.

[yokonao]

@samruddhikhandale
Hi!, Take a look at this PR, please.

[mering]

This seems to be missing from devcontainer build --help documentation.