feat: add action definition

action.yaml

@@ -0,0 +1,39 @@
+name: 'Setup Browser'
+description: |
+  Installs a browser from various sources to use for tests.
+  Are supported:
+
+    - Ungoogled Chromium (`uchromium`), aailable versions are listed [here](https://ungoogled-software.github.io/ungoogled-chromium-binaries/releases/appimage/64bit/)
+inputs:
+  target:
+    description: |
+      The browser and ersion to install in the form `BROWSER:VERSION`.
+      The version is optional.
+    required: true
+  install-path:
+    description: |
+      The path where the binary should be installed.
+      The path is added to the system PATH for subsequent steps.
+runs:
+  using: "composite"
+  steps:
+    - name: Download setup-browser
+      working-directory: ${{ github.action_path }}
+      run: |
+        wget -q https://code.bcarlin.net/actions/setup-browser/releases/download/latest/setup-browser
+        chmod +x setup-browser
+      shell: bash
+
+    - name: Download the browser
+      working-directory: ${{ github.action_path }}
+      run: |
+        INSTALL_PATH=${INSTALL_PATH:-/opt/${TARGET%%:*}}
+        ./setup-browser install \
+          -cache-path cache \
+          -install-to "$INSTALL_PATH" \
+          ${{ inputs.target }}
+        echo "$(dirname "$INSTALL_PATH")" >> "$GITHUB_PATH"
+      shell: bash
+      env:
+        TARGET: ${{ inputs.target }}
+        INSTALL_PATH: ${{ inputs.install-path }}