setup vscode dev container config / implementation similar to the ardux qmk one

.devcontainer/Dockerfile

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+FROM docker.io/zmkfirmware/zmk-dev-arm:stable
+
+COPY bashrc tmp
+RUN mv /tmp/bashrc ~/.bashrc

.devcontainer/bashrc

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+export LS_OPTIONS='-F --color=auto'
+alias ls='ls $LS_OPTIONS'
+if [ "${CODESPACES}" = "true" ]; then
+  export WORKSPACE_DIR="$HOME/workspace/zmk"
+fi
+if [ -f "$WORKSPACE_DIR/zephyr/zephyr-env.sh" ]; then
+  source "$WORKSPACE_DIR/zephyr/zephyr-env.sh"
+fi

.devcontainer/devcontainer.json

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+{
+  "name": "ARDUX ZMK Development",
+  "dockerFile": "Dockerfile",
+  "runArgs": ["--security-opt", "label=disable"],
+  "extensions": ["ms-vscode.cpptools"],
+  "settings": {
+    "terminal.integrated.shell.linux": "/bin/bash"
+  },
+  "forwardPorts": [3000],
+  "workspaceMount": "type=volume,source=zmk-src,target=/workspaces/zmk",
+  "workspaceFolder": "/workspaces",
+  "mounts": [
+    "type=bind,source=${localWorkspaceFolder},target=/workspaces/zmk-ardux",
+    "type=bind,source=${localWorkspaceFolder}/.build,target=/workspaces/zmk/app/build"
+  ]
+}

.gitignore

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+.build/