fix: resolve Docker build failure by optimizing configuration and prisma signal handling

- Added .dockerignore to prevent build poisoning from local artifacts.
- Updated Dockerfile with stable Bun version, memory limits, and missing config files.
- Refined prisma.ts signal handlers to avoid process termination during Next.js build phases.
- Synchronized eslint-config-next with Next.js version.

.dockerignore

@@ -0,0 +1,47 @@
+node_modules
+.next
+.git
+.env
+.env.local
+.env.development.local
+.env.test.local
+.env.production.local
+*.log
+npm-debug.log*
+yarn-debug.log*
+yarn-error.log*
+bun-debug.log*
+
+# Docker files
+Dockerfile
+.dockerignore
+
+# OS files
+.DS_Store
+Thumbs.db
+
+# Markdown/Documentation
+README.md
+GEMINI.md
+AGENTS.md
+AUDIT_REPORT.md
+QWEN.md
+NOTE.md
+task-project-apbdes.md
+MUSIK_CREATE_ANALYSIS.md
+darkMode.md
+/test-results
+/playwright-report
+/tmp_assets
+/foldergambar
+/googleapi
+/xx
+/xx.ts
+/xx.txt
+/test.txt
+/x.json
+/x.sh
+/xcoba.ts
+/xcoba2.ts
+/gambar.ttx
+/test-berita-state.ts