Optimise docker build space usage

[ArtyomSavchenko]

No description provided.

[huly-github-staging]

Connected to Huly®: UBERF-14095

[Copilot]

Pull Request Overview

This PR optimizes Docker build space usage by switching multiple service Docker images from full base images (hardcoreeng/base and hardcoreeng/front-base) to a slimmer variant (hardcoreeng/base-slim:v20250916), enabling Docker BuildKit, and adding optional cleanup logic for build artifacts. The slim base image uses node:22-slim instead of node:22, reducing image size while maintaining necessary runtime dependencies.

• Migrated 5 services to use the lighter base-slim Docker image
• Added DOCKER_BUILDKIT: 1 across GitHub Actions workflows for improved build performance
• Introduced cleanup script logic to remove build artifacts after Docker builds

Reviewed Changes

Copilot reviewed 7 out of 7 changed files in this pull request and generated 1 comment.

Show a summary per file

File	Description
services/payment/pod-payment/Dockerfile	Changed base image from hardcoreeng/base to hardcoreeng/base-slim:v20250916
services/export/pod-export/Dockerfile	Changed base image from hardcoreeng/base to hardcoreeng/base-slim:v20250916
services/billing/pod-billing/Dockerfile	Changed base image from hardcoreeng/base to hardcoreeng/base-slim:v20250916
services/backup/backup-api-pod/Dockerfile	Changed base image from hardcoreeng/front-base to hardcoreeng/base-slim:v20250916
dev/tool/Dockerfile	Changed base image from unversioned hardcoreeng/base to hardcoreeng/base-slim:v20250916
common/scripts/docker_build.sh	Added cleanup logic for build artifacts (bundle, dist, .rush directories) with bug in flag handling
.github/workflows/main.yml	Enabled Docker BuildKit across multiple CI jobs and added cleanup flag to docker-build job