DEBIAN_FRONTEND=noninteractive

Dockerfile

@@ -1,9 +1,10 @@
 FROM debian:12.8-slim
-RUN apt update -y
-RUN apt upgrade -y
-RUN apt install apache2 php -y
+RUN DEBIAN_FRONTEND=noninteractive apt update -y
+RUN DEBIAN_FRONTEND=noninteractive apt upgrade -y
+RUN DEBIAN_FRONTEND=noninteractive apt install apache2 php -y
 RUN cat /etc/apache2/ports.conf
 RUN sed '/Listen/{s/\([0-9]\+\)/8080/; :a;n; ba}' /etc/apache2/ports.conf
+RUN cat /etc/apache2/ports.conf
 RUN service apache2 start
 
 CMD ["bash", "-c", "service apache2 start; stail -F error.log"]