diff --git a/Dockerfile b/Dockerfile
index e1d3b0c..63bb742 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -4,32 +4,43 @@ FROM debian:11.6
 LABEL org.opencontainers.image.authors="github@diouxx.be"
 
 
-#Ne pas poser de question à l'installation
+#Ne pas poser de question à l'installation / Don't ask questions during installation
 ENV DEBIAN_FRONTEND noninteractive
 
-#Installation d'apache et de php7.4 avec extension
+#Install pre-requesites
 RUN apt update \
 && apt install --yes --no-install-recommends \
+wget \
+apt-transport-https \
+lsb-release \
+ca-certificates
+
+#Add Sury repository for PHP 8.1
+RUN wget -O /etc/apt/trusted.gpg.d/php.gpg https://packages.sury.org/php/apt.gpg \
+&& sh -c 'echo "deb https://packages.sury.org/php/ $(lsb_release -sc) main" > /etc/apt/sources.list.d/php.list'
+
+#Installation d'apache et de php8.1 avec extension / Installation of apache and php8.1 with extensions
+RUN apt update \
+&& apt upgrade --yes \
+&& apt install --yes --no-install-recommends \
 apache2 \
-php7.4 \
-php7.4-mysql \
-php7.4-ldap \
-php7.4-xmlrpc \
-php7.4-imap \
+php8.1 \
+php8.1-mysql \
+php8.1-ldap \
+php8.1-xmlrpc \
+php8.1-imap \
 curl \
-php7.4-curl \
-php7.4-gd \
-php7.4-mbstring \
-php7.4-xml \
-php7.4-apcu-bc \
+php8.1-curl \
+php8.1-gd \
+php8.1-mbstring \
+php8.1-xml \
+# php8.1-apcu-bc \ - no longer supported https://github.com/krakjoe/apcu-bc/issues/34
 php-cas \
-php7.4-intl \
-php7.4-zip \
-php7.4-bz2 \
-php7.4-redis \
+php8.1-intl \
+php8.1-zip \
+php8.1-bz2 \
+php8.1-redis \
 cron \
-wget \
-ca-certificates \
 jq \
 libldap-2.4-2 \
 libldap-common \
diff --git a/Makefile b/Makefile
new file mode 100644
index 0000000..bff1475
--- /dev/null
+++ b/Makefile
@@ -0,0 +1,13 @@
+DOCKER_TAG = docker-glpi
+DOCKER_REVISION ?= testing-$(USER)
+
+.PHONY: build-image
+build-image:
+	docker build -t ${DOCKER_TAG}:${DOCKER_REVISION} .
+
+.PHONY: run-image
+run-image:
+	docker run -it --rm -p 8080:80 ${DOCKER_TAG}:${DOCKER_REVISION}
+
+.PHONY: start-dev
+start-dev: build-image run-image
\ No newline at end of file
diff --git a/glpi-start.sh b/glpi-start.sh
index 92063aa..97e8282 100644
--- a/glpi-start.sh
+++ b/glpi-start.sh
@@ -6,8 +6,8 @@
 
 if [[ -z "${TIMEZONE}" ]]; then echo "TIMEZONE is unset"; 
 else 
-echo "date.timezone = \"$TIMEZONE\"" > /etc/php/7.4/apache2/conf.d/timezone.ini;
-echo "date.timezone = \"$TIMEZONE\"" > /etc/php/7.4/cli/conf.d/timezone.ini;
+echo "date.timezone = \"$TIMEZONE\"" > /etc/php/8.1/apache2/conf.d/timezone.ini;
+echo "date.timezone = \"$TIMEZONE\"" > /etc/php/8.1/cli/conf.d/timezone.ini;
 fi
 
 SRC_GLPI=$(curl -s https://api.github.com/repos/glpi-project/glpi/releases/tags/${VERSION_GLPI} | jq .assets[0].browser_download_url | tr -d \")