fix: Dockerfile to reduce vulnerabilities

The following vulnerabilities are fixed with an upgrade:
- https://snyk.io/vuln/SNYK-DEBIAN11-GLIBC-5927133
- https://snyk.io/vuln/SNYK-DEBIAN11-GLIBC-5927133
- https://snyk.io/vuln/SNYK-DEBIAN11-GLIBC-5927133
- https://snyk.io/vuln/SNYK-DEBIAN11-LUA53-517140
- https://snyk.io/vuln/SNYK-DEBIAN11-NGHTTP2-5953384

Dockerfile

@@ -8,7 +8,7 @@ RUN composer install \
     --prefer-dist
 
 
-FROM php:8.1.6-apache as php-server
+FROM php:8.1-apache as php-server
 COPY --from=vendor /tmp/vendor/ /var/www/html/vendor/
 COPY . /var/www/html
 RUN chown -R www-data:www-data /var/www/html