CUPS ppd persistence. Currently failing to persist /etc/cups/printers.conf

FIX smb.conf.j2 must end with new line

Dockerfile

@@ -16,12 +16,8 @@ ENV ADMIN_PASSWORD_SECRET=samba-admin-password \
     WINBIND_USE_DEFAULT_DOMAIN=yes \
     WORKGROUP=AD
 
-ENV TERM=xterm
-
-ENV DEBIAN_FRONTEND noninteractive
-
 RUN apt-get -y update && \
-    apt-get -yqq --no-install-recommends install \
+    DEBIAN_FRONTEND=noninteractive apt-get -yqq --no-install-recommends install \
 #        resolvconf \
 #        dnsutils \
 #        vim \
@@ -59,15 +55,14 @@ RUN apt-get -y update && \
 
 #RUN chmod 777 /home
 
-RUN env --unset=DEBIAN_FRONTEND
-
 COPY *.conf.j2 /root/
 COPY entrypoint.sh /entrypoint.sh
-RUN chmod +x /entrypoint.sh
 COPY supervisord.conf /etc/supervisor/conf.d/supervisord.conf
 
-RUN mkdir -p /etc/cups-persist/ppd && \
+RUN chmod +x /entrypoint.sh && \
+	mkdir -p /etc/cups-persist/ppd && \
 	ln -s /etc/cups-persist/printers.conf /etc/cups/printers.conf && \
+	rmdir /etc/cups/ppd && \
 	ln -s /etc/cups-persist/ppd /etc/cups/ppd && \
 	sed -i "s:Listen localhost\:631:Port 631\nServerAlias \*:" /etc/cups/cupsd.conf && \
 	sed -E -i "s:(Order allow\,deny):\1\n  Allow all:" /etc/cups/cupsd.conf

smb.conf.j2

@@ -33,3 +33,4 @@
 	load printers = yes
 	dcerpc endpoint servers = +spoolss
 	rpcd_spoolss:idle_seconds=300
+