Fix release pipeline to invoke new_docker_build.sh with --run-jenkins-builder

- Changed from direct jenkins_builder_ubuntu26.sh call to new_docker_build.sh
- Added --build-prebuilt-image, --use-prebuilt-image, --run-jenkins-builder flags
- Set required environment variables (PROJECT, OS_VERSION, LTS_VERSION, etc.)
- Configure RELEASE_BUILD=ON, RUN_JENKINS_BUILDER=ON, RUN_CTEST=ON, VERIFY_RPM=ON
- Use absolute paths via SCRIPT_DIR for reliable execution in Docker container

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

release-16-10-2026.sh

@@ -3,12 +3,56 @@
 # Build an LTS DEB package for Ubuntu 26.04
 # Migrated from jenkins_builder.sh (openSUSE) to Ubuntu/DEB ecosystem
 #
-# Required environment (set by the Jenkinsfile or `docker run -e ...`):
+# This script runs the release pipeline inside a Docker container.
+# It builds the prebuilt image (if needed) and executes the Jenkins builder inside the container.
+#
+
+set -euo pipefail
+
+SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
+PIPELINE_ROOT="$(cd "${SCRIPT_DIR}/.." && pwd)"
+LEGATUS_ROOT="${PIPELINE_ROOT}/qt-migration-legatus/qt6-after/qt6-migrated-legatus"
+
+# Required environment for the build
 export PROJECT=guez
 export OS_VERSION=u26.04
 export LTS_VERSION=1.0
 export GUEZ_MODE=ON
-export WORKSPACE=/home/torsten/sandbox/qt6-migration-pipeline/
-export PROJECT_BASE_DIR=/home/torsten/sandbox/release
+export WORKSPACE=/workspace
+export PROJECT_BASE_DIR=/workspace
+export BUILD_NUMBER="${BUILD_NUMBER:-$(date +%Y%m%d-%H%M%S)}"
+export BUILD_TAG="${BUILD_TAG:-release-qt6-first}"
 
-bash ./jenkins_builder_ubuntu26.sh
+# Release build configuration
+export RELEASE_BUILD=ON
+export RUN_JENKINS_BUILDER=ON
+export RUN_CTEST=ON
+export VERIFY_RPM=ON
+
+# Docker image configuration
+DOCKER_IMAGE="legatus-qt6:1.0"
+
+log_info() {
+  printf 'INFO: %s\n' "$*"
+}
+
+log_info "=== Qt6 Release Pipeline ==="
+log_info "Pipeline root: ${PIPELINE_ROOT}"
+log_info "Legatus root: ${LEGATUS_ROOT}"
+log_info "Docker image: ${DOCKER_IMAGE}"
+log_info "Build number: ${BUILD_NUMBER}"
+log_info "Build tag: ${BUILD_TAG}"
+
+# Build prebuilt image and run Jenkins builder inside container
+log_info "Building prebuilt Docker image and running Jenkins builder..."
+bash "${LEGATUS_ROOT}/new_docker_build.sh" \
+  --build-prebuilt-image \
+  --use-prebuilt-image \
+  --run-jenkins-builder \
+  --docker-image "${DOCKER_IMAGE}" \
+  --project "${PROJECT}" \
+  --lts-version "${LTS_VERSION}" \
+  --build-number "${BUILD_NUMBER}" \
+  --build-tag "${BUILD_TAG}"
+
+log_info "=== Release Pipeline Complete ==="