use default dind network with public dns

.drone.yml

@@ -4,7 +4,6 @@ name: default
 steps:
 - name: docker
   image: plugins/docker
-  network_mode: bridge
   settings:
     build_args:
         - UBUNTU_MIRROR_URL=http://ubuntumirror.app.las1.eeqj.de/ubuntu

Dockerfile

@@ -17,3 +17,5 @@ RUN apt-get clean && \
         /tmp/* \
         /var/tmp/* \
         /etc/ssh/ssh_host_*_key
+
+EXPOSE 22

README.markdown

@@ -1,55 +1,11 @@
-# Usage
+# sneak/sandbox
+
+FIXME update this example command
 
 ```
-docker run -d --name sandbox sneak/sandbox ; 
+docker run -d -p 22:22 -v /home:/home sneak/sandbox
-docker exec -ti sandbox script -q -c "TERM=xterm-color byobu" /dev/null
 ```
 
-(The 'script' bit works around a bug where `docker exec -t` doesn't
-give you a usable tty.)
-
-Or, if you're clever and run an Ubuntu mirror (or caching reverse proxy) on
-your docker host:
-
-```
-docker run -d --add-host archive.ubuntu.com:172.17.0.1 --name sandbox sneak/sandbox ; 
-docker exec -ti sandbox script -q -c "TERM=xterm-color byobu" /dev/null
-```
-
-# Includes Things Like
-
-* vim
-* neovim
-* rbenv
-* default-jre
-* docker (from docker)
-* docker-compose
-* docker-machine
-* bash completion
-* python (from ubuntu)
-    * setuptools
-    * virtualenv
-* node4 (from ubuntu)
-    * coffeescript
-    * coffeelint
-* go1.6 (from ubuntu)
-* byobu and screen
-* awscli (from pypi)
-* irssi
-* runit / daemontools
-    * envdir
-* build-essential
-    * make
-* latex and fonts (from ubuntu)
-* Other useful misc tools
-    * pv
-    * pbzip2
-    * nmap
-    * ppss
-    * pwgen
-    * netcat and telnet
-    * and much more...
-
 # TODO
 
 * ctags / enhanced vim
@@ -72,12 +28,12 @@ docker exec -ti sandbox script -q -c "TERM=xterm-color byobu" /dev/null
 
 Feedback is appreciated, PRs are encouraged.
 
-Drop me an email or tweet [@sneakdotberlin](https://twitter.com/sneakdotberlin).
-
 # Author
 
 Jeffrey Paul <sneak@sneak.berlin>
 
+[sneak@sneak.berlin](mailto:sneak@sneak.berlin)
+
 https://sneak.berlin
 
 [@sneakdotberlin](https://twitter.com/sneakdotberlin)

run.sh

@@ -6,7 +6,7 @@ set -e
 exec 1> >(tee -a /var/log/sandboxbuild.log) 2>&1
 
 MURM="main universe restricted multiverse"
-C="$(lsb_release -cs)"
+C="focal"
 cat > /etc/apt/sources.list.new <<EOF
 deb $UBUNTU_MIRROR_URL $C $MURM
 deb $UBUNTU_MIRROR_URL $C-updates $MURM