Added DEBIAN_FRONTEND=noninteractive to the Dockerfile.

Dockerfile

@@ -6,8 +6,10 @@ LABEL description="OpenLDAP" \
       version="Ubuntu 24.04"
 
 # Install the necessary packages for LDAP Proxy server
-RUN apt-get -q update && apt-get install -q --yes slapd
-RUN apt-get -q update && apt-get install -q --yes slapd-contrib ldap-utils
+ENV DEBIAN_FRONTEND=noninteractive
+RUN apt-get -q update
+RUN apt-get install -q --yes slapd ldap-utils
+RUN apt-get install -q --yes slapd-contrib
 
 # Remove the slapd.d directory, since we will be using slapd.conf.
 RUN rm -rf /etc/ldap/slapd.d