Do not install dorgflow on PHP versions below 8.2

Dockerfile

@@ -25,11 +25,15 @@ ADD run/scripts/l3dnewversion /usr/local/bin/l3dnewversion
 ADD run/scripts/delete /usr/local/bin/.delete
 
 RUN echo "Install dorgflow" && \
-    cd /var/opt && \
-    git clone https://github.com/joachim-n/dorgflow.git && \
-    cd dorgflow && \
-    composer install --no-dev && \
-    ln -s /var/opt/dorgflow/dorgflow /usr/local/bin/dorgflow && \
+    if [ "${PHP_VERSION}" == "7.4" ] || [ "${PHP_VERSION}" == "8.0" ] || [ "${PHP_VERSION}" == "8.1" ]; then \
+      echo "Dorgflow is not supported on this PHP version."; \
+    else \
+      cd /var/opt && \
+      git clone https://github.com/joachim-n/dorgflow.git && \
+      cd dorgflow && \
+      composer install --no-dev && \
+      ln -s /var/opt/dorgflow/dorgflow /usr/local/bin/dorgflow && \
+    fi && \
     \
     echo "Install git-flow" && \
     wget --no-check-certificate -q  https://raw.githubusercontent.com/petervanderdoes/gitflow-avh/develop/contrib/gitflow-installer.sh && \