CI: build: Add support to use container included external toolchain

Add support to use container included external toolchain and skip
redownloading external sdk for each test.

Signed-off-by: Christian Marangi <ansuelsmth@gmail.com>
(cherry picked from commit 0fe5776f4a79a2b095912e258738e3203207e9dd)

.github/workflows/build.yml

@@ -176,6 +176,11 @@ jobs:
         id: parse-toolchain
         working-directory: openwrt
         run: |
+          if [ -d /external-toolchain/ ]; then
+            echo "toolchain-type=external_container" >> $GITHUB_OUTPUT
+            exit 0
+          fi
+
           TOOLCHAIN_PATH=snapshots
 
           if [ -n "${{ github.base_ref }}" ]; then
@@ -251,7 +256,7 @@ jobs:
             ccache-kernel-${{ inputs.target }}/${{ inputs.subtarget }}-
 
       - name: Download external toolchain/sdk
-        if: inputs.build_toolchain == false && steps.parse-toolchain.outputs.toolchain-type != 'internal'
+        if: inputs.build_toolchain == false && steps.parse-toolchain.outputs.toolchain-type != 'internal' && steps.parse-toolchain.outputs.toolchain-type != 'external_container'
         shell: su buildbot -c "sh -e {0}"
         working-directory: openwrt
         run: |
@@ -288,6 +293,20 @@ jobs:
           echo CONFIG_TARGET_PER_DEVICE_ROOTFS=y >> .config
           echo CONFIG_TARGET_ALL_PROFILES=y >> .config
 
+      - name: Configure external toolchain in container
+        if: inputs.build_toolchain == false && steps.parse-toolchain.outputs.toolchain-type == 'external_container'
+        shell: su buildbot -c "sh -e {0}"
+        working-directory: openwrt
+        run: |
+          echo CONFIG_DEVEL=y >> .config
+          echo CONFIG_AUTOREMOVE=y >> .config
+          echo CONFIG_CCACHE=y >> .config
+
+          ./scripts/ext-toolchain.sh \
+            --toolchain /external-toolchain/$(ls /external-toolchain/ | grep openwrt-toolchain)/toolchain-* \
+            --overwrite-config \
+            --config ${{ inputs.target }}/${{ inputs.subtarget }}
+
       - name: Configure external toolchain
         if: inputs.build_toolchain == false && steps.parse-toolchain.outputs.toolchain-type == 'external_toolchain'
         shell: su buildbot -c "sh -e {0}"

.github/workflows/coverity.yml

@@ -17,6 +17,7 @@ jobs:
       packages: read
     uses: ./.github/workflows/build.yml
     with:
+      container_name: toolchain
       target: x86
       subtarget: 64
       build_full: true

.github/workflows/kernel.yml

@@ -109,6 +109,7 @@ jobs:
          include: ${{fromJson(needs.determine_targets.outputs.targets_subtargets)}}
     uses: ./.github/workflows/build.yml
     with:
+      container_name: toolchain
       target: ${{ matrix.target }}
       subtarget: ${{ matrix.subtarget }}
       build_kernel: true

.github/workflows/packages.yml

@@ -43,6 +43,7 @@ jobs:
             subtarget: 64
     uses: ./.github/workflows/build.yml
     with:
+      container_name: toolchain
       target: ${{ matrix.target }}
       subtarget: ${{ matrix.subtarget }}
       build_kernel: true