Maor Leger 6e16d9180a [codespaces] - use prebuilt docker image (#20629) ... ### Packages impacted by this PR N/A ### Issues associated with this PR N/A ### Describe the problem that is addressed by this PR Our codespaces setup uses a custom Dockerfile in order to configure docker-in-codespaces and install rush. But nowadays the default image installs docker by default and we can move installing rush to a post-create-script instead of building the container. All-in-all this reduces the time to start by over 50%, avoiding the need to build a custom image every time and reusing the prebuilt default image. It also reduces the amount of code we have to maintain. From 1 minute and 7 seconds to 23 seconds before the file tree shows up. I just picked that event arbitrarily. Resolves #17011		2022-03-02 10:22:59 -08:00
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devcontainer.json	[codespaces] - use prebuilt docker image (#20629)	2022-03-02 10:22:59 -08:00