Change: [Actions] stop using 'run-vcpkg' action for CI

.github/workflows/ci-build.yml

@@ -160,14 +160,25 @@ jobs:
     - name: Checkout
       uses: actions/checkout@v2
 
-    - name: Prepare vcpkg (with cache)
-      uses: lukka/run-vcpkg@v6
+    - name: Prepare cache key
+      id: key
+      run: |
+        echo "::set-output name=image::$ImageOS-$ImageVersion"
+
+    - name: Enable vcpkg cache
+      uses: actions/cache@v2
       with:
-        vcpkgDirectory: '/usr/local/share/vcpkg'
-        doNotUpdateVcpkg: false
-        vcpkgGitCommitId: 2a42024b53ebb512fb5dd63c523338bf26c8489c
-        vcpkgArguments: 'liblzma libpng lzo'
-        vcpkgTriplet: '${{ matrix.arch }}-osx'
+        path: /usr/local/share/vcpkg/installed
+        key: ${{ steps.key.outputs.image }}-vcpkg-${{ matrix.arch }}
+
+    - name: Prepare vcpkg
+      run: |
+        vcpkg install --triplet=${{ matrix.arch }}-osx \
+          liblzma \
+          libpng \
+          lzo \
+          zlib \
+          # EOF
 
     - name: Install OpenGFX
       run: |
@@ -225,25 +236,30 @@ jobs:
     - name: Checkout
       uses: actions/checkout@v2
 
-    # "restore-cache" which is done by "run-vcpkg" uses Windows tar.
-    # A git clone on windows marks a few files as read-only; when Windows tar
-    # tries to extract the cache over this folder, it fails, despite the files
-    # being identical. This failure shows up as an warning in the logs. We
-    # avoid this by simply removing the read-only mark from the git folder.
-    # In other words: this is a hack!
-    # See: https://github.com/lukka/run-vcpkg/issues/61
-    - name: Remove read-only flag from vcpkg git folder
+    - name: Prepare cache key
+      id: key
       shell: powershell
       run: |
-        attrib -r "c:\vcpkg\.git\*.*" /s
+        # Work around caching failure with GNU tar
+        New-Item -Type Junction -Path vcpkg -Target c:\vcpkg
 
-    - name: Prepare vcpkg (with cache)
-      uses: lukka/run-vcpkg@v6
+        Write-Output "::set-output name=image::$env:ImageOS-$env:ImageVersion"
+
+    - name: Enable vcpkg cache
+      uses: actions/cache@v2
       with:
-        vcpkgDirectory: 'c:/vcpkg'
-        doNotUpdateVcpkg: true
-        vcpkgArguments: 'liblzma libpng lzo zlib'
-        vcpkgTriplet: '${{ matrix.arch }}-windows-static'
+        path: vcpkg/installed
+        key: ${{ steps.key.outputs.image }}-vcpkg-${{ matrix.arch }}
+
+    - name: Prepare vcpkg
+      shell: bash
+      run: |
+        vcpkg install --triplet=${{ matrix.arch }}-windows-static \
+          liblzma \
+          libpng \
+          lzo \
+          zlib \
+          # EOF
 
     - name: Install OpenGFX
       shell: bash