diff --git a/.gitignore b/.gitignore
index b3820d5..34ea3ec 100644
--- a/.gitignore
+++ b/.gitignore
@@ -2,3 +2,4 @@
 build.sh
 deploy.sh
 data
+compose-test.yml
diff --git a/Dockerfile b/Dockerfile
index 2f6f539..e5750c7 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -33,4 +33,4 @@ RUN set -xe && \
 ADD rootfs /
 
 ENTRYPOINT ["/entrypoint.sh"]
-#CMD ["/usr/sbin/dhcpd -4 -f -d --no-pid -cf /etc/dhcp/dhcpd.conf -lf /etc/dhcp/dhcpd.leases -user dhcpd -group dhcpd"]
+CMD ["/usr/sbin/named", "-u", "bind", "-g", "-c", "/data/named.conf"]
diff --git a/README.md b/README.md
index adbfe01..9e4ccef 100644
--- a/README.md
+++ b/README.md
@@ -34,15 +34,22 @@ services:
     restart: unless-stopped
 ```
 ## Changelog
+v13.2.192015-2 - 02.01.2026
+- Defined CMD in Dockerfile; ENTRYPOINT now supports user-provided commands
+
 v13.2.192015-1 - 31.12.2025
 - Debian v. 13.2
+
 v.2.1.0 - 27.10.2025
 - bind9 v. 1:9.20.15-1
+
 v.2.0.1 - 08.10.2025
 - Set env for Bind version in Dockerfile.
+
 v.2.0.0 - 09.09.2025
 - Debian v. 13.1
 - bind9 v. 1:9.20.11-4
+
 v.1.0.0 - 25.06.2025
 - Debian v. 12.11
 - bind9 v. 1:9.18.33-1~deb12u2
diff --git a/rootfs/entrypoint.sh b/rootfs/entrypoint.sh
index 9ff2a48..de25f9a 100755
--- a/rootfs/entrypoint.sh
+++ b/rootfs/entrypoint.sh
@@ -48,34 +48,57 @@ function _main {
 
  chown -R 100:100 /data
  # define CMD to be launched
- CMD="/usr/sbin/named -u bind -g -c /data/named.conf"
+ #CMD="/usr/sbin/named -u bind -g -c /data/named.conf"
 }
 
-function custom_bashrc {
-echo '
+custom_bashrc() {
+cat <<'EOF'
 export LS_OPTIONS="--color=auto"
-alias "ls=ls $LS_OPTIONS"
-alias "ll=ls $LS_OPTIONS -la"
-alias "l=ls $LS_OPTIONS -lA"
-'
+alias ls='ls $LS_OPTIONS'
+alias ll='ls $LS_OPTIONS -la'
+alias l='ls $LS_OPTIONS -lA'
+
+# prompt SOLO per shell interattive
+if [[ $- == *i* ]]; then
+  if [ "$(id -u)" -eq 0 ]; then
+    PS1="\[\e[35m\][\[\e[31m\]\u\[\e[36m\]@\[\e[32m\]\h\[\e[90m\] \w\[\e[35m\]]\[\e[0m\]# "
+  else
+    PS1="\[\e[35m\][\[\e[33m\]\u\[\e[36m\]@\[\e[32m\]\h\[\e[90m\] \w\[\e[35m\]]\[\e[0m\]$ "
+  fi
+  export PS1
+fi
+EOF
 }
 
-function _bashrc {
-echo "-----------------------------------------"
-echo " .bashrc file setup..."
-echo "-----------------------------------------"
-custom_bashrc | tee /root/.bashrc
-echo 'export PS1="\[\e[35m\][\[\e[31m\]\u\[\e[36m\]@\[\e[32m\]\h\[\e[90m\] \w\[\e[35m\]]\[\e[0m\]# "' >> /root/.bashrc
-for i in $(ls /home); do echo 'export PS1="\[\e[35m\][\[\e[33m\]\u\[\e[36m\]@\[\e[32m\]\h\[\e[90m\] \w\[\e[35m\]]\[\e[0m\]$ "' >> /home/${i}/.bashrc; done
+setup_bashrc() {
+  for home in /root /home/*; do
+    [ -d "$home" ] || continue
+    bashrc="$home/.bashrc"
+
+    # crea se manca
+    [ -f "$bashrc" ] || touch "$bashrc"
+
+    # evita duplicazioni
+    grep -q '### CUSTOM BASHRC ###' "$bashrc" && continue
+
+    {
+      echo ''
+      echo '### CUSTOM BASHRC ###'
+      custom_bashrc
+    } >> "$bashrc"
+  done
 }
 
+
 _dirs
 _main
-_bashrc
 
-#CMD="$@"
-[ -z "$CMD" ] && export CMD="supervisord -c /etc/supervisor/supervisord.conf"
+setup_bashrc
+
+# print cmd that will be executed
+echo "Starting: $*" >&2
+
+# launch CMD
+exec "$@"
 
-exec $CMD
 
-exit $?