Fixed Appveyor Docker image build

.appveyor.yml

@@ -132,13 +132,13 @@ environment:
 #     deploy:
 #       provider: Environment
 #       name: f4exb
-#   - matrix:
-#       only:
-#         - TARGET: ubuntu2204docker
-#     before_build:
-#       - git clone https://github.com/f4exb/sdrangel-docker.git
-#       - cd sdrangel-docker
-#     build_script:
-#       - cd sdrangel
-#       - ./build_vanilla.sh -T ${APPVEYOR_PULL_REQUEST_HEAD_COMMIT:-${APPVEYOR_REPO_COMMIT}}
-#       - ./build_server.sh -T ${APPVEYOR_PULL_REQUEST_HEAD_COMMIT:-${APPVEYOR_REPO_COMMIT}}
+  - matrix:
+      only:
+        - TARGET: ubuntu2204docker
+    before_build:
+      - git clone https://github.com/f4exb/sdrangel-docker.git
+      - cd sdrangel-docker
+    build_script:
+      - cd sdrangel
+      - ./build_vanilla.sh -T ${APPVEYOR_PULL_REQUEST_HEAD_COMMIT:-${APPVEYOR_REPO_COMMIT}}
+      - ./build_server.sh -T ${APPVEYOR_PULL_REQUEST_HEAD_COMMIT:-${APPVEYOR_REPO_COMMIT}}