Adds Docker support for TravianZ

Introduces Docker Compose configuration for simplified deployment.

Includes a Dockerfile to build the application image and necessary configurations for running TravianZ in a containerized environment.

Provides documentation for setup and usage in `DOCKER_README.md`.

.env.example

@@ -0,0 +1,11 @@
+# MySQL Database Configuration
+MYSQL_ROOT_PASSWORD=rootpassword
+MYSQL_DATABASE=travian
+MYSQL_USER=travianz
+MYSQL_PASSWORD=travianzpass
+
+# Application Configuration
+# These values will be used during the installation wizard
+# Hostname for database connection (use 'db' when running in Docker)
+DB_HOST=db
+DB_PORT=3306