Fix Docker build: replace yarn.lock symlink with real file

- Fixed yarn.lock symlink issue causing Docker build failures
- Updated Dockerfile to use --immutable instead of deprecated --frozen-lockfile
- Added Prisma client generation in Docker build
- Updated .dockerignore to exclude unnecessary files
- Added OpenSSL dependency for Prisma in Alpine Linux

.dockerignore

@@ -3,9 +3,8 @@
 node_modules
 nextjs_space/node_modules
 npm-debug.log
-yarn-error.log
 
-# Next.js
+# Next.js build output
 nextjs_space/.next
 .next
 
@@ -16,13 +15,15 @@ coverage
 # Misc
 .DS_Store
 *.pem
+
+# Environment variables (except example)
 .env
 .env.local
 .env.development.local
 .env.test.local
 .env.production.local
 
-# Debug
+# Debug logs
 npm-debug.log*
 yarn-debug.log*
 yarn-error.log*
@@ -37,9 +38,26 @@ yarn-error.log*
 # Git
 .git
 .gitignore
-README.md
 
-# Docker
+# Documentation (не нужны в образе)
+README.md
+README.deployment.md
+DATABASE.md
+DATABASE.pdf
+
+# Docker files
 Dockerfile
 docker-compose.yml
 .dockerignore
+
+# Scripts
+*.sh
+
+# Backups
+backups/
+*.sql
+*.sql.gz
+
+# Config examples
+nginx.conf.example
+traefik-config-example.yml