[ docker-in-docker ] - buildx can fallback to previous version if latest artifact not found

[gauravsaini04]

Feature name:

• Docker-in-Docker

Description:

This PR introduces the following feature:

• docker/buildx plugin can fallback to previous version in case of latest tag artifact release not found;

Changelog:

• Updated install.sh file
  • Introduced a new flag fallback for testing this new feature
  • Code written for fallback to prev. version in case of latest artifact release not found
• Added a scenario in scenarios.json and a corresponding test scenario docker_build_fallback_buildx

Command for testing:

devcontainer features test . -f docker-in-docker --skip-autogenerated --filter "docker_build_fallback_buildx" --preserve-test-containers

[samruddhikhandale]

Overall the PR makes sense, thanks for looking at it. Left few comments!

[samruddhikhandale]

Looks great ⚡