Add Docker and Coolify deployment setup

Add the container configuration, environment templates, and storage settings needed to deploy SPOTA with Docker and Coolify.

.gitignore

@@ -0,0 +1,62 @@
+# Environment and secrets
+.env
+.env.*
+!.env.example
+!.env.coolify.example
+
+# Dependencies / generated packages
+/vendor/
+node_modules/
+npm-debug.log*
+yarn-error.log*
+composer.lock
+package-lock.json
+
+# Runtime uploads and user-generated files
+/files/
+/files/**
+!/files/.gitkeep
+/img/curiga/
+
+# Logs and temporary files
+error_log
+**/error_log
+*.log
+*.tmp
+*.temp
+tmp/
+temp/
+cache/
+
+# Backups, archives, and exported bundles
+*.zip
+*.rar
+*.7z
+*.tar
+*.tar.gz
+*.tgz
+*.bak
+*.backup
+*.old
+bekap/
+backup/
+backups/
+
+# Known unrelated/backup project folders
+/direktori-spn/
+/pkm/
+/simpanghilir/
+/sisesta/
+/rekomendasi-artikel/
+/pedoman-old/
+
+# OS/editor files
+.DS_Store
+Thumbs.db
+desktop.ini
+.idea/
+.vscode/
+
+# Docker local data should be volumes, not Git content
+docker-data/
+.docker-data/