fix: create .env, run migrations, set up Winter CMS in Dockerfile

Dockerfile

@@ -29,11 +29,11 @@ COPY . .
 
 RUN composer install --no-dev --optimize-autoloader --no-interaction
 
-RUN php artisan winter:version 2>/dev/null || true
-
-RUN php artisan key:generate --force 2>/dev/null || true
-
-RUN chown -R www-data:www-data /var/www/html && \
+RUN cp .env.example .env && \
+    php artisan key:generate --force && \
+    touch storage/database.sqlite && \
+    php artisan winter:up --force && \
+    chown -R www-data:www-data /var/www/html && \
     chmod -R 755 /var/www/html && \
     chmod -R 777 storage bootstrap/cache themes plugins