GitHub actions: improve linux_pre_build_command formatting and install glibc debug symbols

.github/workflows/pull_request.yml

@@ -14,7 +14,33 @@ jobs:
     uses: swiftlang/github-workflows/.github/workflows/swift_package_test.yml@main
     with:
       linux_os_versions: '["noble", "jammy", "focal", "rhel-ubi9"]'
-      linux_pre_build_command: command -v apt >/dev/null 2>&1 && apt update && apt install -y libsqlite3-dev libncurses-dev || (command -v yum >/dev/null 2>&1 && yum update -y && yum install -y sqlite-devel ncurses-devel)
+      linux_pre_build_command: |
+        if command -v apt-get >/dev/null 2>&1 ; then # bookworm, noble, jammy, focal
+          apt-get update -y
+
+          # Build dependencies
+          apt-get install -y libsqlite3-dev libncurses-dev
+
+          # Debug symbols
+          apt-get install -y libc6-dbg
+        elif command -v dnf >/dev/null 2>&1 ; then # rhel-ubi9
+          dnf update -y
+
+          # Build dependencies
+          dnf install -y sqlite-devel ncurses-devel
+
+          # Debug symbols
+          dnf debuginfo-install -y glibc
+        elif command -v yum >/dev/null 2>&1 ; then # amazonlinux2
+          yum update -y
+
+          # Build dependencies
+          yum install -y sqlite-devel ncurses-devel
+
+          # Debug symbols
+          yum install -y yum-utils
+          debuginfo-install -y glibc
+        fi
       linux_build_command: 'swift test --no-parallel'
       linux_swift_versions: '["nightly-main", "nightly-6.2"]'
       windows_swift_versions: '["nightly-main"]'