Add scripts for building RPMs and creating release draft

.github/workflows/Dockerfile

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+ARG RHEL_VERSION
+FROM rockylinux:${RHEL_VERSION}
+
+ARG RHEL_VERSION
+ARG PG_VERSION
+ARG PG_RMAN_VERSION
+
+ENV PATH /usr/pgsql-${PG_VERSION}/bin:$PATH
+ENV PGDATA /var/lib/pgsql/${PG_VERSION}/data
+
+
+################################################################################
+#
+# Prerequisite
+#
+################################################################################
+
+# Install packages for build
+RUN dnf update -y
+RUN dnf install -y \
+        clang gcc git krb5-devel libselinux-devel libzstd-devel lz4-devel make \
+        openssl-devel pam-devel readline-devel rpmdevtools which zlib-devel
+
+# Install PostgreSQL
+RUN if [ "${RHEL_VERSION}" = "8" ]; then \
+        dnf install -y --enablerepo=powertools perl-IPC-Run; \
+    else \
+        dnf install -y --enablerepo=crb perl-IPC-Run; \
+    fi
+RUN dnf install -y https://download.postgresql.org/pub/repos/yum/reporpms/EL-${RHEL_VERSION}-x86_64/pgdg-redhat-repo-latest.noarch.rpm
+RUN dnf -qy module disable postgresql
+RUN dnf install -y postgresql${PG_VERSION}-server postgresql${PG_VERSION}-devel
+
+
+################################################################################
+#
+# Build RPMs
+#
+################################################################################
+
+# Build by postgres user
+USER postgres
+WORKDIR /var/lib/pgsql/
+
+# Deploy the files required for the build
+RUN rpmdev-setuptree
+RUN git clone -b REL_${PG_VERSION}_STABLE https://github.com/ossc-db/pg_rman.git
+RUN cp -a pg_rman/SPECS/pg_rman${PG_VERSION}.spec rpmbuild/SPECS
+RUN cd pg_rman && \
+    git archive HEAD \
+        --format=tar.gz \
+        --prefix=pg_rman-${PG_RMAN_VERSION}-pg${PG_VERSION}/ \
+        --output=../rpmbuild/SOURCES/pg_rman-${PG_RMAN_VERSION}-pg${PG_VERSION}.tar.gz
+
+# Build RPMs
+RUN rpmbuild rpmbuild/SPECS/pg_rman${PG_VERSION}.spec \
+        -bb --define="dist .pg${PG_VERSION}.rhel${RHEL_VERSION}"
+
+
+################################################################################
+#
+# Run regression tests
+#
+################################################################################
+
+USER root
+RUN rpm -ivh /var/lib/pgsql/rpmbuild/RPMS/x86_64/*
+
+USER postgres
+RUN initdb --no-locale -E UTF8  && \
+    pg_ctl -w start
+RUN make -C pg_rman installcheck; exit 0
+RUN cat /var/lib/pgsql/pg_rman/regression.out

.github/workflows/release.yml

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+name: Build RPMs and upload its to release draft
+
+on:
+  push:
+    tags:
+      - 'V*'
+
+jobs:
+  build_rpms:
+    runs-on: ubuntu-latest
+    permissions:
+      contents: write
+    strategy:
+      matrix:
+        RHEL_VERSION: ["8", "9"]
+        PG_VERSION: ["13", "14", "15", "16", "17"]
+    steps:
+    - name: Checkout repository
+      uses: actions/checkout@v4
+      with:
+        ref: REL_${{ matrix.PG_VERSION }}_STABLE
+
+    - name: Build PostgreSQL ${{ matrix.PG_VERSION }} RPMs for RHEL ${{ matrix.RHEL_VERSION }}
+      run: |
+        export PG_RMAN_VERSION=${GITHUB_REF_NAME#V}
+        docker build .github/workflows/ -t pg_rman \
+          --build-arg RHEL_VERSION=${{ matrix.RHEL_VERSION }} \
+          --build-arg PG_VERSION=${{ matrix.PG_VERSION }} \
+          --build-arg PG_RMAN_VERSION=${PG_RMAN_VERSION}
+        container_id=$(docker create pg_rman)
+        docker cp $container_id:/var/lib/pgsql/rpmbuild/RPMS/x86_64 ./RPMS
+
+    - name: Create release draft and upload the RPMs
+      uses: softprops/action-gh-release@v2
+      with:
+        name: Release draft
+        draft: true
+        files: ./RPMS/*.rpm