Added fabm github workflow

Author: platipodium

.github/workflows/fabm.yaml

@@ -0,0 +1,43 @@
+# SPDX-FileCopyrightText: 2025 Helmholtz-Zentrum hereon GmbH
+# SPDX-License-Identifier: CC0-1.0
+# SPDX-FileContributor: Carsten Lemmen <carsten.lemmen@hereon.de>
+#
+name: Build and Test FABM Docker
+
+on:
+  push:
+    branches:
+      - main
+  pull_request:
+    branches:
+      - main
+
+jobs:
+  build-fabm-docker:
+    runs-on: ubuntu-latest
+    permissions:
+      contents: read
+      packages: write
+    steps:
+      - name: Check out repository
+        uses: actions/checkout@v4
+
+      - name: Log in to GitHub Container Registry
+        run: echo "${{ secrets.GITHUB_TOKEN }}" | docker login ghcr.io -u $GITHUB_ACTOR --password-stdin
+
+      - name: Build and Push Docker Image
+        run: |
+          docker build -t ghcr.io/${{ github.repository }}/fabm -f .docker/Dockerfile-fabm .
+          docker push ghcr.io/${{ github.repository }}/fabm
+
+  test-fabm-docker:
+    runs-on: ubuntu-latest
+    needs: build-fabm-docker
+    steps:
+      - name: Log in to GitHub Container Registry
+        run: echo "${{ secrets.GITHUB_TOKEN }}" | docker login ghcr.io -u $GITHUB_ACTOR --password-stdin
+
+      - name: Pull and Test Docker Image
+        run: |
+          docker pull ghcr.io/${{ github.repository }}/fabm
+          docker run ghcr.io/${{ github.repository }}/fabm gotm -v