fix: web access over FQDN instead localhost

Dockerfile

@@ -4,11 +4,6 @@ FROM ubuntu:18.04
 # Environment
 ENV CUPS_ADMIN_USER=print
 ENV CUPS_ADMIN_PASSWD=print
-
-# Labels
-LABEL maintainer="Markus Pesch"
-
-# Non-Interactive
 ENV DEBIAN_FRONTEND="noninteractive"
 
 # Software installation
@@ -28,7 +23,12 @@ RUN apt-get update && \
       hplip && \
     rm -rf /var/lib/apt/lists/*
 
+COPY install-scripts /tmp/install-scripts
+RUN for i in /tmp/install-scripts/*; do sh $i; done
+
+# https://www.cups.org/doc/firewalls.html
+EXPOSE 631
+
 COPY entrypoint.sh /usr/local/bin/entrypoint.sh
-RUN chmod +x /usr/local/bin/entrypoint.sh
 
 ENTRYPOINT [ "/usr/local/bin/entrypoint.sh"]

README.md

@@ -13,11 +13,12 @@ docker run \
   --detach \
   --env CUPS_ADMIN_USER=print \
   --env CUPS_ADMIN_PASSWD=print \
-  --network=host \
-  --volume /var/run/dbus:/var/run/dbus \
   --name cupsd \
+  --publish 631:631 \
+  --volume /var/run/dbus:/var/run/dbus \
   volkerraschek/cupsd
 ```
+  --network=host \
 
 or if you want to use a `docker-compose.yml`
 
@@ -29,10 +30,12 @@ services:
     environment:
       - CUPS_ADMIN_USER=print
       - CUPS_ADMIN_PASSWD=print
-    network_mode: host
+    image: volkerraschek/cupsd
+    ports:
+      - 631:631
     restart: always
     volumes:
       - /var/run/dbus:/var/run/dbus
 ```
 
-After starting the container, cups is available over http://localhost:631
+After starting the container, cups is available over http://localhost:631 or over your FQDN.

entrypoint.sh

@@ -1,14 +1,3 @@
 #!/bin/bash
 
-useradd \
-  --groups=sudo,lp,lpadmin \
-  --create-home \
-  --home-dir=/home/${CUPS_ADMIN_USER} \
-  --shell=/bin/bash \
-  ${CUPS_ADMIN_USER}
-
-echo "${CUPS_ADMIN_USER}:${CUPS_ADMIN_PASSWD}" | chpasswd
-
-sed --in-place '/%sudo[[:space:]]/ s/ALL[[:space:]]*$/NOPASSWD:ALL/' /etc/sudoers
-
 /usr/sbin/cupsd -f

install-scripts/00_cupsd.sh

@@ -0,0 +1,10 @@
+#/bin/bash
+
+/usr/sbin/cupsd
+while [ ! -f /var/run/cups/cupsd.pid ]; do
+  sleep 1
+done
+cupsctl --remote-admin --remote-any --share-printers
+kill $(cat /var/run/cups/cupsd.pid)
+
+echo "ServerAlias *" >> /etc/cups/cupsd.conf

install-scripts/01_user.sh

@@ -0,0 +1,14 @@
+#!/bin/bash
+
+set -e
+
+useradd \
+  --groups=sudo,lp,lpadmin \
+  --create-home \
+  --home-dir=/home/${CUPS_ADMIN_USER} \
+  --shell=/bin/bash \
+  ${CUPS_ADMIN_USER}
+
+echo "${CUPS_ADMIN_USER}:${CUPS_ADMIN_PASSWD}" | chpasswd
+
+sed --in-place '/%sudo[[:space:]]/ s/ALL[[:space:]]*$/NOPASSWD:ALL/' /etc/sudoers