Improved devcontainer setup with e2e test mini infra (#2672) #27

Job	Run time
build-and-push (ruby:3.1.7-slim-bookworm)	2m 44s
build-and-push (ruby:3.0.7-slim-bullseye)	3m 33s
build-and-push (ruby:3.2.9-slim-bookworm)	2m 48s
build-and-push (ruby:2.7.8-slim-bullseye)	2m 14s
build-and-push (ruby:3.3.9-slim-bookworm)	2m 41s
build-and-push (ruby:3.4.5-slim-bookworm)	3m 30s
	17m 30s

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