Devcontainer (#29259)

* mvp devcontainer. builds, runs and UI works

* fix indentation

* enable color and fix openpilot_env path

* separate dockerfile for devcontainer

* use prebuilt image

* Fix openpilot_env setup

* Add dev container section in readme

* Fix typo

* Fix typo again

* Move dev dockerfile to .devcontainer dir

* Update README

* Add note about x11 forwarding on macos

* Update dev container json

* Fix typo

* Override DISPLAY on macOS

* Mention XAUTHORITY for macOS setup in README

* fix typo

* Add devcontainer CI test

* Rename to devcontainer

* Fix git issues

* ripgrep

* Link instead of vscode manual

* Replace raw path with containerWorkspaceFolder

* Fix typo

* Remove dev tools workflow

* Link away X11 forwarding setup isntructions for mac

* Remove fork consrtaint, add test run of scons

* Add submodules as safe.directories in postStartCommand

* Remove openpilot_env references

* Add scons cache volume

---------

Co-authored-by: Robbe Derks <robbe@localhost.localdomain>
Co-authored-by: Kacper Rączy <gfw.kra@gmail.com>
old-commit-hash: d71a7190f1

.github/workflows/tools_tests.yaml

@@ -91,4 +91,20 @@ jobs:
       if: github.ref == 'refs/heads/master' && github.event_name != 'pull_request' && github.repository == 'commaai/openpilot'
       run: |
         $DOCKER_LOGIN
-        docker push $DOCKER_REGISTRY/openpilot-docs:latest
+        docker push $DOCKER_REGISTRY/openpilot-docs:latest
+
+  devcontainer:
+    name: devcontainer
+    runs-on: ubuntu-latest
+    steps:
+    - uses: actions/checkout@v3
+      with:
+        submodules: true
+    - name: Setup Dev Container CLI
+      run: npm install -g @devcontainers/cli
+    - name: Build dev container image
+      run: devcontainer build --workspace-folder .
+    - name: Run dev container
+      run: devcontainer up --workspace-folder .
+    - name: Test environment
+      run: devcontainer exec --workspace-folder . scons --dry-run