### Author:  [@julienmalik](https://meta.discourse.org/u/julienmalik)
#### Post date: [Maio 3, 2016, 3:16pm UTC](https://meta.discourse.org/t/launcher-rebuild-fails-because-of-ip-addr-show-docker0/43613/1 "2016-05-03T15:16:26Z")
I just tried to rebuild my container and hit the following error :
```plaintext
# ./launcher rebuild myforum
Ensuring launcher is up to date
Fetching origin
Launcher is up-to-date
Stopping old container
+ /usr/bin/docker.io stop -t 10 myforum
myforum
cd /pups && git pull && /pups/bin/pups --stdin
Unable to find image '10.0.42.1:latest' locally
Pulling repository 10.0.42.1
FATA[0001] Error: image library/10.0.42.1:latest not found
cat: cids/myforum_bootstrap.cid: No such file or directory
docker: "rm" requires a minimum of 1 argument. See '/usr/bin/docker.io rm --help'.
rm: cannot remove ‘cids/myforum_bootstrap.cid’: No such file or directory
**FAILED TO BOOTSTRAP** please scroll up and look for earlier error messages, there may be more than one
```
I tracked this down to launcher#L78-L80
On my machine I get :
```plaintext
$ ip addr show docker0
3: docker0: mtu 1500 qdisc noqueue state UP group default
link/ether 56:84:7a:fe:97:99 brd ff:ff:ff:ff:ff:ff
inet 172.17.42.1/16 scope global docker0
valid_lft forever preferred_lft forever
inet 10.0.42.1/16 scope global docker0
valid_lft forever preferred_lft forever
$ ip addr show docker0 |grep 'inet ' | awk '{ split($2,a,"/"); print a[1] }'
172.17.42.1
10.0.42.1
```
which makes the launcher#L499 line fail badly with the cryptic error message above :
Here are some info about my system :
```plaintext
$ lsb_release -a
No LSB modules are available.
Distributor ID: Ubuntu
Description: Ubuntu 14.04.4 LTS
Release: 14.04
Codename: trusty
$ aptitude show docker.io | grep ^Version
Version: 1.6.2~dfsg1-1ubuntu4~14.04.1
```
docker is used exclusively to run discourse.
I’m using discourse since more than a year, and have successfullly run `launcher rebuild` in the past. I just hit this issue today, trying to update my container.
---
### Author:  [@codinghorror](https://meta.discourse.org/u/codinghorror)
#### Post date: [Maio 3, 2016, 3:20pm UTC](https://meta.discourse.org/t/launcher-rebuild-fails-because-of-ip-addr-show-docker0/43613/2 "2016-05-03T15:20:10Z")
Is this because your Docker version is so old at 1.6? I suggest updating Docker.
---
### Author:  [@julienmalik](https://meta.discourse.org/u/julienmalik)
#### Post date: [Maio 3, 2016, 6:18pm UTC](https://meta.discourse.org/t/launcher-rebuild-fails-because-of-ip-addr-show-docker0/43613/3 "2016-05-03T18:18:26Z")
Updating docker to 1.11 was painful but fixes this.
but maybe the ip / grep / awk magic requires some extra security to avoid the strange message long after.
---
### Author:  [@codinghorror](https://meta.discourse.org/u/codinghorror)
#### Post date: [Maio 3, 2016, 6:32pm UTC](https://meta.discourse.org/t/launcher-rebuild-fails-because-of-ip-addr-show-docker0/43613/4 "2016-05-03T18:32:05Z")
OK, good to know – I will make “minimum required docker verson” 1.8 for launcher (it was previously 1.6) right now, and see if that helps anyone in the future.
> **[Home](https://github.com/moby/moby/wiki)**
>
> The Moby Project - a collaborative project for the container ecosystem to assemble container-based systems - moby/moby
---
### Author:  [@codinghorror](https://meta.discourse.org/u/codinghorror)
#### Post date: [Fevereiro 27, 2017, 6:27am UTC](https://meta.discourse.org/t/launcher-rebuild-fails-because-of-ip-addr-show-docker0/43613/5 "2017-02-27T06:27:44Z")