chore: harden php8 compatibility, optimize installer/croppers, and refresh docs/admin ux

docker-compose.yml

@@ -1,5 +1,3 @@
-version: '3.8'
-
 services:
   web:
     build:
@@ -10,7 +8,6 @@ services:
       - "8080:80"
     volumes:
       - ./:/var/www/html
-      - ./var:/var/www/html/var
     environment:
       - APACHE_DOCUMENT_ROOT=/var/www/html
     depends_on:
@@ -20,13 +17,13 @@ services:
     restart: unless-stopped
 
   db:
-    image: mysql:5.7
+    image: mariadb:latest
     container_name: travianz-db
     environment:
-      MYSQL_ROOT_PASSWORD: ${MYSQL_ROOT_PASSWORD:-rootpassword}
-      MYSQL_DATABASE: ${MYSQL_DATABASE:-travian}
-      MYSQL_USER: ${MYSQL_USER:-travianz}
-      MYSQL_PASSWORD: ${MYSQL_PASSWORD:-travianzpass}
+      MARIADB_ROOT_PASSWORD: ${MARIADB_ROOT_PASSWORD:-${MYSQL_ROOT_PASSWORD:-rootpassword}}
+      MARIADB_DATABASE: ${MARIADB_DATABASE:-${MYSQL_DATABASE:-travian}}
+      MARIADB_USER: ${MARIADB_USER:-${MYSQL_USER:-travianz}}
+      MARIADB_PASSWORD: ${MARIADB_PASSWORD:-${MYSQL_PASSWORD:-travianzpass}}
     volumes:
       - db-data:/var/lib/mysql
       - ./var/db:/docker-entrypoint-initdb.d:ro
@@ -35,7 +32,7 @@ services:
     networks:
       - travianz-network
     restart: unless-stopped
-    command: --default-authentication-plugin=mysql_native_password --sql_mode=""
+    command: --sql_mode=""
 
   phpmyadmin:
     image: phpmyadmin/phpmyadmin:latest
@@ -44,7 +41,7 @@ services:
       PMA_HOST: db
       PMA_PORT: 3306
       PMA_USER: root
-      PMA_PASSWORD: ${MYSQL_ROOT_PASSWORD:-rootpassword}
+      PMA_PASSWORD: ${MARIADB_ROOT_PASSWORD:-${MYSQL_ROOT_PASSWORD:-rootpassword}}
     ports:
       - "8081:80"
     depends_on: