Don't leave cruft in $PWD when installing

.github/workflows/ci.yml

@@ -40,13 +40,28 @@ jobs:
         run_quiet apt install --yes gh
         gh --version
 
+    # Create a marker we can use later to verify no files were added to the working directory.
+    # Extra files make goreleaser anxious.
+    - name: Create Marker File
+      run: touch "${RUNNER_TEMP}/pre-install-marker"
+
     - name: Install bob
       uses: ./
       id: install
       with:
         tag: ${{ matrix.tag }}
         github-token: ${{ secrets.ELEVATED_GITHUB_TOKEN }}
 
+    # Find anything in the working directory newer than the marker created above
+    - name: Check For New Files
+      run: |
+        if [ "$(find "$PWD" -newer "${RUNNER_TEMP}/pre-install-marker" | wc -l | xargs)" -gt 0 ]; then
+          echo "::error::Unexpected files left in working directory"
+          find "$PWD" -newer "${RUNNER_TEMP}/pre-install-marker"
+          exit 1
+        fi
+        echo "No unexpected files found."
+
     - name: Test reported version
       env:
         GH_TOKEN: ${{ secrets.ELEVATED_GITHUB_TOKEN }}

action.yml

@@ -32,5 +32,4 @@ runs:
       id: capture
       shell: bash
       run: |
-        bob -version | tee .version_check
-        echo "installed_version=$(< .version_check)" >> "$GITHUB_OUTPUT"
+        echo "installed_version=$(bob -version)" | tee -a "$GITHUB_OUTPUT"