ci: add step to build and verify Docker image

.github/workflows/build.yml

@@ -1,66 +1,60 @@
-name: "Build"
+name: "Pull requests build"
 on:
-  pull_request:
-    paths-ignore:
-      - '.txt'
-      - 'LICENSE'
-      - 'docs/**'
-  push:
-    branches:
-      - main
-    tags-ignore:
-      - '*'
-    paths-ignore:
-      - '.txt'
-      - 'LICENSE'
-      - 'docs/**'
+    pull_request:
+        paths-ignore:
+            - '.txt'
+            - 'LICENSE'
+            - 'docs/**'
 
 jobs:
-  pr-build:
-    if: >
-      github.event_name == 'pull_request' && !github.event.pull_request.draft && (
-        github.event.action == 'opened' ||
-        github.event.action == 'reopened' ||
-        github.event.action == 'synchronize' 
-      )
-    runs-on: ${{ matrix.os }}
-    strategy:
-      matrix:
-        os: [ubuntu-latest, windows-latest, macos-latest]
-    steps:
-      - uses: actions/checkout@v3
-      - name: Set up JDK 17
-        uses: actions/setup-java@v3
-        with:
-          distribution: 'temurin'
-          java-version: 17
-          architecture: x64
-      - name: Cache Maven packages
-        uses: actions/cache@v3.2.5
-        with:
-          path: ~/.m2
-          key: ${{ runner.os }}-m2-${{ hashFiles('**/pom.xml') }}
-          restore-keys: ${{ runner.os }}-m2-
-      - name: Build with Maven
-        run: mvn --no-transfer-progress verify
-
-  build:
-    if: github.repository == 'WebGoat/WebGoat' && github.event_name == 'push'
-    runs-on: ubuntu-latest
-    name: "Branch build"
-    steps:
-        - uses: actions/checkout@v3
-        - name: set up JDK 17
-          uses: actions/setup-java@v3
-          with:
-              distribution: 'temurin'
-              java-version: 17
-              architecture: x64
-        - name: Cache Maven packages
-          uses: actions/cache@v3.2.5
-          with:
-              path: ~/.m2
-              key: ubuntu-latest-m2-${{ hashFiles('**/pom.xml') }}
-              restore-keys: ubuntu-latest-m2-
-        - name: Test with Maven
-          run: mvn --no-transfer-progress verify
+    pr-build:
+        if: >
+            github.event_name == 'pull_request' && !github.event.pull_request.draft && (
+              github.event.action == 'opened' ||
+              github.event.action == 'reopened' ||
+              github.event.action == 'synchronize' 
+            )
+        runs-on: ${{ matrix.os }}
+        strategy:
+            matrix:
+                os: [ ubuntu-latest, windows-latest, macos-latest ]
+        steps:
+            -   uses: actions/checkout@v3
+            -   name: Set up JDK 17
+                uses: actions/setup-java@v3
+                with:
+                    distribution: 'temurin'
+                    java-version: 17
+                    architecture: x64
+            -   name: Cache Maven packages
+                uses: actions/cache@v3.2.5
+                with:
+                    path: ~/.m2
+                    key: ${{ runner.os }}-m2-${{ hashFiles('**/pom.xml') }}
+                    restore-keys: ${{ runner.os }}-m2-
+            -   name: Build with Maven
+                run: mvn --no-transfer-progress verify
+            -   name: "Set up QEMU"
+                if: runner.os == 'Linux'
+                uses: docker/setup-qemu-action@v2.1.0
+            -   name: "Set up Docker Buildx"
+                if: runner.os == 'Linux'
+                uses: docker/setup-buildx-action@v2
+            -   name: "Verify Docker WebGoat build"
+                if: runner.os == 'Linux'
+                uses: docker/build-push-action@v4.0.0
+                with:
+                    context: ./
+                    file: ./Dockerfile
+                    push: false
+                    build-args: |
+                        webgoat_version=${{ env.WEBGOAT_MAVEN_VERSION }}
+            -   name: "Verify Docker WebGoat desktop build"
+                uses: docker/build-push-action@v4.0.0
+                if: runner.os == 'Linux'
+                with:
+                    context: ./
+                    file: ./Dockerfile_desktop
+                    push: false
+                    build-args: |
+                        webgoat_version=${{ env.WEBGOAT_MAVEN_VERSION }}