feat: support dev container networking without host mode

[llamantino]

• [ ] This change is worth documenting at https://docs.all-hands.dev/
• [ ] Include this change in the Release Notes. If checked, you must provide an end-user friendly description for your change below

End-user friendly description of the problem this fixes or functionality this introduces.

Updates devcontainer and make docker-dev to fix runtime connection without requiring host mode.

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Summarize what the PR does, explaining any non-trivial design decisions.

Updates devcontainer.json and the compose file used by make docker-dev to fix runtime connection without requiring host mode.

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Link of any specific issues this addresses:

[enyst]

Looks like a better solution. Does it work well for you?

[llamantino]

On Ubuntu (Docker Engine) and WSL2 (Docker Desktop), all good so far. This should also fix devcontainers/make docker-dev still being broken on macOS.

[neubig]

Thank you!