ci: migrate to GitLab CI with multi-distribution RPM builds

- Replace GitHub Actions with GitLab CI using Docker-in-Docker
- Build 3 RPMs (el7, el8, el9) + 1 DEB from Dockerfile.package
- Add verify jobs for each target distribution
- Remove obsolete files:
  - Dockerfile, Dockerfile.test-socket (replaced by Dockerfile.package)
  - scripts/socket_consumer.py, scripts/socket_listener.py
  - scripts/test_unix_socket.sh, scripts/run_integration_tests.sh
- Update README.md with new package targets
- Update architecture.yml for GitLab CI workflow

Breaks: Single RPM no longer supported (glibc incompatibility)
Replaced by: Distribution-specific RPMs (el7, el8, el9)

Co-authored-by: Qwen-Coder <qwen-coder@alibabacloud.com>

scripts/build.sh

@@ -1,6 +1,8 @@
 #!/bin/bash
 #
 # build.sh - Build mod_reqin_log in Docker
+# Builds the module for the current platform only.
+# For multi-platform packages, use: make package
 #
 
 set -e
@@ -8,7 +10,10 @@ set -e
 SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
 IMAGE_NAME="mod_reqin_log-build"
 
-echo "Building Docker image..."
+echo "Building mod_reqin_log in Docker..."
+echo ""
+
+# Build the image (uses Dockerfile, not Dockerfile.package)
 docker build -t "$IMAGE_NAME" "$SCRIPT_DIR/.."
 
 echo ""
@@ -18,10 +23,11 @@ echo "Build complete. Extracting module..."
 mkdir -p "$SCRIPT_DIR/../dist"
 
 # Extract the built module from container
-docker run --rm -v "$SCRIPT_DIR/../dist:/output" "$IMAGE_NAME" cp /build/modules/mod_reqin_log.so /output/
+docker run --rm -v "$SCRIPT_DIR/../dist:/output" "$IMAGE_NAME" \
+  cp /build/modules/mod_reqin_log.so /output/
 
 echo ""
 echo "Module built successfully: $SCRIPT_DIR/../dist/mod_reqin_log.so"
 echo ""
 echo "To test the module:"
-echo "  docker run --rm -v \$PWD/dist:/modules mod_reqin_log-build httpd -t -C 'LoadModule reqin_log_module /modules/mod_reqin_log.so'"
+echo "  docker run --rm -v \$PWD/dist:/modules $IMAGE_NAME httpd -t -C 'LoadModule reqin_log_module /modules/mod_reqin_log.so'"