Move container build files into their own dir and introduce the scope script.

docker/Dockerfile

@@ -0,0 +1,11 @@
+FROM gliderlabs/alpine
+MAINTAINER Weaveworks Inc <help@weave.works>
+WORKDIR /home/weave
+RUN apk add --update supervisor
+RUN ["sh", "-c", "rm -rf /var/cache/apk/*"]
+ADD supervisord.conf /etc/
+ADD ./app /home/weave/
+ADD ./probe /home/weave/
+ADD ./entrypoint.sh /home/weave/
+EXPOSE 4040
+ENTRYPOINT ["/home/weave/entrypoint.sh"]

docker/entrypoint.sh

@@ -0,0 +1,44 @@
+#!/bin/sh
+
+usage() {
+	echo "$0 --dns <IP> --hostname <NAME> --searchpath <SEARCHPATH>"
+	exit 1
+}
+
+# This script exists to modify the network settings in the scope containers
+# as docker doesn't allow it when started with --net=host
+while true; do
+    case "$1" in
+        --dns)
+            [ $# -gt 1 ] || usage
+            DNS_SERVER="$2"
+            shift 2
+            ;;
+        --hostname)
+            [ $# -gt 1 ] || usage
+            HOSTNAME="$2"
+            shift 2
+            ;;
+        --searchpath)
+            [ $# -gt 1 ] || usage
+            SEARCHPATH="$2"
+            shift 2
+            ;;
+        *)
+            break
+            ;;
+    esac
+done
+
+if [ -n "$DNS_SERVER" -a -n "$SEARCHPATH" ]; then
+    echo "domain $SEARCHPATH" >/etc/resolv.conf
+    echo "search $SEARCHPATH" >>/etc/resolv.conf
+    echo "nameserver $DNS_SERVER" >>/etc/resolv.conf
+fi
+
+if [ -n "$HOSTNAME" ]; then
+    echo "$HOSTNAME" >/etc/hostname
+    hostname -F /etc/hostname
+fi
+
+/usr/bin/supervisord -c /etc/supervisord.conf

docker/supervisord.conf

@@ -0,0 +1,16 @@
+[supervisord]
+nodaemon=true
+
+[program:app]
+command=/home/weave/app
+stdout_logfile=/dev/stdout
+stdout_logfile_maxbytes=0
+stderr_logfile=/dev/stderr
+stderr_logfile_maxbytes=0
+
+[program:probe]
+command=/home/weave/probe -proc.root=/hostproc
+stdout_logfile=/dev/stdout
+stdout_logfile_maxbytes=0
+stderr_logfile=/dev/stderr
+stderr_logfile_maxbytes=0