added docker setup

docker/.env.example

@@ -0,0 +1,26 @@
+# OpenCRM Docker Environment
+# ============================
+# Copy this file to .env and adjust the values
+
+# Domain (for Caddy SSL certificate)
+# Use your actual domain, e.g., crm.example.com
+DOMAIN=localhost
+
+# Database
+DB_ROOT_PASSWORD=change-this-root-password
+DB_NAME=opencrm
+DB_USER=opencrm
+DB_PASSWORD=change-this-password
+
+# JWT Authentication
+# Generate with: openssl rand -base64 32
+JWT_SECRET=change-this-to-a-secure-random-string
+JWT_EXPIRES_IN=7d
+
+# Encryption Key (for portal credentials)
+# Generate with: openssl rand -hex 32
+ENCRYPTION_KEY=change-this-to-a-32-byte-hex-key
+
+# First Install: Set to "true" to seed database on first startup
+# After first successful start, set back to "false"
+RUN_SEED=true