CI: htmldoc artifacts and package

.github/workflows/ci.yml

@@ -165,23 +165,38 @@ jobs:
       run: |
         #*.po and documentation.pot are modifyed by build. Ignore them for now.
         .github/scripts/verify-clean-repo.sh ':(exclude)docs/po/*.po' ':(exclude)docs/po/documentation.pot'
+    - name: Upload build artifacts
+      uses: actions/upload-artifact@v7
+      with:
+        name: linuxcnc-doc
+        path: docs/build/html*/ #Preserve the path for html
+        if-no-files-found: error
 
   package-arch:
     runs-on: ${{ matrix.runner }}
     strategy:
       matrix:
         runner: ["ubuntu-24.04", "ubuntu-24.04-arm"]
         image: ["debian:bookworm", "debian:trixie", "debian:sid"]
+        include:
+          - allow_fail: False
+            image: debian:bookworm
+          - allow_fail: False
+            image: debian:trixie
+          - allow_fail: True
+            image: debian:sid
     container:
       image: ${{ matrix.image }}
       # IPC_OWNER is needed for shmget IPC_CREAT
       # SYS_ADMIN is needed for shmctl IPC_SET
       options: --cap-add=IPC_OWNER --cap-add=SYS_ADMIN
+    continue-on-error: ${{ matrix.allow_fail }}
     steps:
     - name: Dump GitHub context
       env:
         GITHUB_CONTEXT: ${{ toJson(github) }}
       run: |
+        echo Allow failure: ${{ matrix.allow_fail }}
         echo Number of CPUs: $(nproc)
         echo "$GITHUB_CONTEXT"
     - name: Install pre-dependencies
@@ -255,16 +270,25 @@ jobs:
     strategy:
       matrix:
         image: ["debian:bookworm", "debian:trixie", "debian:sid"]
+        include:
+        - allow_fail: False
+          image: debian:bookworm
+        - allow_fail: False
+          image: debian:trixie
+        - allow_fail: True
+          image: debian:sid
     container:
       image: ${{ matrix.image }}
       # IPC_OWNER is needed for shmget IPC_CREAT
       # SYS_ADMIN is needed for shmctl IPC_SET
       options: --cap-add=IPC_OWNER --cap-add=SYS_ADMIN
+    continue-on-error: ${{ matrix.allow_fail }}
     steps:
     - name: Dump GitHub context
       env:
         GITHUB_CONTEXT: ${{ toJson(github) }}
       run: |
+        echo Allow failure: ${{ matrix.allow_fail }}
         echo Number of CPUs: $(nproc)
         echo "$GITHUB_CONTEXT"
     - name: Install pre-dependencies