Establish an automatic weekly release

We'll schedule weekly builds and releases to start every
Monday morning. During this process, we'll compile the
cbdb RPM package from its source and tag the latest commit
to generate a release note automatically.

.github/workflows/cbdb_release_weekly.yml

@@ -0,0 +1,80 @@
+name: Build and Release RPM Weekly
+on:
+  schedule:
+    - cron: '0 16 * * 1'
+jobs:
+  Build-rpm:
+    runs-on: cbdb-weekly
+    steps:
+      - uses: actions/checkout@v3
+        with:
+          ref: cbdb-release-weekly
+          fetch-depth: 0
+      - name: Environment Setup
+        run: |
+          pushd $GITHUB_WORKSPACE
+          pushd deploy/build
+          sudo bash README.CentOS.bash
+          popd
+          sudo yum -y install bash bison-devel bzip2 curl flex-devel less \
+               libevent openssh-clients perl rsync scl-utils sed tar \
+               unzip which
+
+          sudo yum -y install epel-release centos-release-scl \
+               devtoolset-10-gcc devtoolset-10-gcc-c++ devtoolset-10 \
+               devtoolset-10-binutils
+
+          echo -e "/usr/local/lib \n/usr/local/lib64" >> /etc/ld.so.conf
+          echo -e "/usr/lib \n/usr/lib64" >> /etc/ld.so.conf
+          sudo ldconfig
+          echo "Environment setup completed !!!" && gcc -v
+
+      - name: Get LATEST Tag
+        id: set_value
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+        run: |
+          git tag -d $(git tag)
+          git fetch --tags
+
+          timestamp=$(date +"%Y%m%d")
+          rm -rf /tmp/release && mkdir /tmp/release
+
+          current_tag=$(git tag | sort -V -r | head -n 1)
+          main_version=$(echo $current_tag | grep -Eo '[0-9]+\.[0-9]+\.[0-9]+')
+          latest_tag="$main_version-$timestamp-weekly"
+
+          echo "The current tag that already exists is $current_tag"
+          echo "The main version is $main_version"
+          echo "The latest tag is $latest_tag"
+
+          echo "::set-output name=LATEST_TAG::${latest_tag}"
+          echo "::set-output name=MAIN_VERSION::${main_version}"
+
+          sudo git tag $latest_tag && git tag
+
+      - name: Build RPM Package
+        run: |
+          ./configure --with-perl --with-python --with-libxml --with-gssapi \
+                      --prefix=/home/gpadmin/cbdb-install
+          make -j16 && make install
+
+          echo "Build RPM Package"
+          source ~/.bashrc
+          mkdir -p tmp/usr/local/cloudberrydb
+          cp -a /home/gpadmin/cbdb-install/* tmp/usr/local/cloudberrydb
+          fpm -s dir -t rpm -n cloudberrydb -v \
+              ${{ steps.set_value.outputs.MAIN_VERSION }} -p ./ -C tmp
+          cp cloudberrydb-${{ steps.set_value.outputs.MAIN_VERSION }}-1.x86_64.rpm \
+             /tmp/release
+
+      - name: Release
+        uses: softprops/action-gh-release@v1
+        with:
+          files: "/tmp/release/*.rpm"
+          name: v${{ steps.set_value.outputs.LATEST_TAG }}
+          tag_name: "${{ steps.set_value.outputs.LATEST_TAG }}"
+          prerelease: true
+          generate_release_notes: true
+        env:
+          GITHUB_TOKEN: ${{ secrets.RELEASE_NIGHTLY }}