fix(integration tests) #34422 : Adding new Workflow Step To Maven Job Action (#34441)

### Proposed Changes
* As part of the efforts to correctly use the more recent version of the
Docker Maven Plugin to our build process, we need to add this new
Workflow Step. This change was reviewed and approved via huddle by
@spbolton and must be merged in order to move on to the next blocker in
the build process.

---------

Co-authored-by: Stephen Bolton <[email protected]>
Co-authored-by: Claude Sonnet 4.5 <[email protected]>

Author: 3 people

.github/actions/core-cicd/maven-job/action.yml

@@ -238,6 +238,35 @@ runs:
         name: docker-build-context
         path: dotCMS/target/docker-build.tar
 
+    - id: get-sdkman-version
+      name: Get SDKMAN Java Version
+      if: ${{ inputs.generate-docker == 'true' }}
+      shell: bash
+      run: |
+        if [ -f ".sdkmanrc" ]; then
+          SDKMAN_JAVA_VERSION=$(awk -F= '/^java=/ {print $2}' .sdkmanrc)
+          echo "SDKMAN_JAVA_VERSION=${SDKMAN_JAVA_VERSION}" >> $GITHUB_ENV
+          echo "Extracted SDKMAN_JAVA_VERSION: ${SDKMAN_JAVA_VERSION}"
+        else
+          echo "Error: .sdkmanrc file not found"
+          exit 1
+        fi
+
+    - id: build-docker-image-from-archive
+      name: Build Docker Image from Archive
+      if: ${{ inputs.generate-docker == 'true' }}
+      shell: bash
+      run: |
+        # Extract the build context from the tar archive
+        mkdir -p /tmp/docker-context
+        tar -xf dotCMS/target/docker-build.tar -C /tmp/docker-context
+
+        # Build the Docker image from the extracted context
+        docker build --build-arg SDKMAN_JAVA_VERSION="${SDKMAN_JAVA_VERSION}" -t dotcms/dotcms-test:${{ inputs.version }} /tmp/docker-context
+
+        # Verify the image was created
+        docker images dotcms/dotcms-test:${{ inputs.version }}
+
     - id: save-docker-image
       name: Save Docker Image to Tar File
       if: ${{ inputs.generate-docker == 'true' }}