diff --git a/Dockerfile b/Dockerfile
new file mode 100644
index 0000000..533919e
--- /dev/null
+++ b/Dockerfile
@@ -0,0 +1,20 @@
+FROM neale/eris
+
+RUN apk --no-cache add lua5.2
+RUN apk --no-cache add lua5.3
+
+# Install MOTH. This could be less obtuse.
+COPY www /moth/www
+COPY bin /moth/bin
+RUN mkdir -p /moth/state/teams /moth/state/points.new /moth/state/points.tmp
+RUN chown www:www /moth/state/teams /moth/state/points.new /moth/state/points.tmp
+RUN mkdir -p /moth/packages
+RUN touch /moth/state/points.log
+RUN ln -s ../state/puzzles.json /moth/www/puzzles.json
+RUN ln -s ../state/points.json /moth/www/points.json
+
+COPY src/moth-init /usr/sbin/moth-init
+
+WORKDIR /
+CMD ["/usr/sbin/moth-init"]
+
diff --git a/bin/once b/bin/once
index 9439510..af4d152 100755
--- a/bin/once
+++ b/bin/once
@@ -7,20 +7,36 @@ else
 fi
 basedir=$(pwd)
 
-[ -n "$DEBUG" ] && printf "Updating moth instance in %s\n" $(pwd)
+log () {
+	echo "moth: $@" 1>&2
+}
 
 # Do nothing if `disabled` is present
 if [ -f disabled ]; then
+	log "Instance disabled: doing nothing"
 	exit
 fi
 
 # Reset to initial state if `reset` is present
 if [ -f reset ]; then
+	log "Resetting state"
 	rm -f state/teams/* state/points.new/* state/points.tmp/*
 	: > state/points.log
 	rm -f reset
 fi
 
+# Create some team names if needed
+if [ ! -f state/assigned.txt ]; then
+	log "Generating team names"
+	hd </dev/urandom | awk '{print $3 $4 $5 $6;}' | head -n 100 > state/assigned.txt
+fi
+
+# Helpful error message
+if [ $(ls packages | wc -l) -eq 0 ]; then
+	log "error: No packages installed"
+	exit
+fi
+
 # Create a list of currently-active categories
 : > state/categories.txt.new
 for dn in packages/*; do
diff --git a/src/moth-init b/src/moth-init
new file mode 100755
index 0000000..e0cd4d1
--- /dev/null
+++ b/src/moth-init
@@ -0,0 +1,9 @@
+#! /bin/sh
+
+while true; do
+	/moth/bin/once
+	sleep 20
+done &
+
+cd /moth/www
+s6-tcpserver -u $(id -u www) -g $(id -g www) 0.0.0.0 80 /usr/bin/eris -c -d -.