Use Rocky Linux 8 for glibc builds (glibc 2.28)

Refs: lmdbjava/lmdbjava#280

Author: bp-alex

.github/workflows/build.yml

@@ -16,19 +16,19 @@ jobs:
     strategy:
       fail-fast: true
       matrix:
-        # Container versions: debian:bookworm = glibc 2.36, alpine:3.21 = musl
+        # Container versions: rockylinux:8 = glibc 2.28, alpine:3.21 = musl
         include:
-          - { runner: ubuntu-latest, container: "debian:bookworm", artifact: x86_64-linux-gnu.so }
-          - { runner: ubuntu-24.04-arm, container: "debian:bookworm", artifact: aarch64-linux-gnu.so }
+          - { runner: ubuntu-latest, container: "rockylinux:8", artifact: x86_64-linux-gnu.so }
+          - { runner: ubuntu-24.04-arm, container: "rockylinux:8", artifact: aarch64-linux-gnu.so }
           - { runner: ubuntu-latest, container: "alpine:3.21", artifact: x86_64-linux-musl.so }
     runs-on: ${{ matrix.runner }}
     container: ${{ matrix.container }}
     steps:
       - name: Install tools
         run: |
-          if command -v apt-get >/dev/null; then
-            apt-get update && apt-get install -y build-essential git
-          else
+          if command -v dnf >/dev/null; then
+            dnf install -y gcc make git
+          elif command -v apk >/dev/null; then
             apk add --no-cache build-base git
           fi
       - uses: actions/checkout@v4