feat: SugarCRM 6.5.26 CE - Docker + compose + CI/CD

- PHP 5.6 Apache Dockerfile (Debian Jessie, archive repos)
- Source from bklein01/sugarcrm GitHub mirror
- MySQL 5.7 database with healthcheck
- Silent install via init.sh (AdminWizard disabled)
- REST v4.1 API test script (test_api.py)
- Gitea Actions CI/CD for registry push
- Full README with API docs and pitfall notes

.env

@@ -1,16 +1,16 @@
-# SuiteCRM Docker Compose Configuration
-# Copy to .env and customize
+# SugarCRM 6.5.26 CE Docker Umgebung
+# Passwörter ANPASSEN vor erstem Start!
 
-# SuiteCRM
-SUITECRM_PORT=8080
-SUITECRM_SITE_URL=http://localhost:8080
+# Ports
+SUGARCRM_PORT=2080
+MYSQL_PORT=3306
 
-# MariaDB
-MYSQL_PORT=3307
+# MySQL / MariaDB
 MYSQL_ROOT_PASSWORD=change_this_root_password
-MYSQL_DATABASE=suitecrm
-MYSQL_USER=suitecrm
+MYSQL_DATABASE=sugarcrm
+MYSQL_USER=sugarcrm
 MYSQL_PASSWORD=change_this_db_password
 
-# Redis (only with --profile full or --profile redis)
-REDIS_PORT=6379
+# SugarCRM Admin (wird bei Erst-Installation gesetzt)
+SUGARCRM_ADMIN_USER=admin
+SUGARCRM_ADMIN_PASSWORD=admin123