# Building zynthian image now works with docker

**URL:** <https://discourse.zynthian.org/t/building-zynthian-image-now-works-with-docker/2499>\
**Category:** Development\
**Created:** [December 8, 2018, 2:57pm UTC](https://discourse.zynthian.org/t/building-zynthian-image-now-works-with-docker/2499 "2018-12-08T14:57:03Z")\
**Posts on this page:** 20\
**Page:** 1

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**Author:** ![guysoft](https://discourse.zynthian.org/user_avatar/discourse.zynthian.org/guysoft/32/1094_2.png) [@guysoft](https://discourse.zynthian.org/u/guysoft)\
**Post date:** [December 8, 2018, 2:57pm UTC](https://discourse.zynthian.org/t/building-zynthian-image-now-works-with-docker/2499/1 "2018-12-08T14:57:04Z")

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Hey all,  
Thought you might like to know building the zynthian image has just become much more simpler, and can be done on windows, mac and linux, using docker.

The steps to build using docker are:

This is as easy now as:

1. Install Docker
2. Install docker-compose
3. `git clone https://github.com/guysoft/ZynthianOS.git`
4. `cd ZynthianOS/src`
5. `wget https://raw.githubusercontent.com/guysoft/CustomPiOS/devel/src/docker/docker-compose.yml`
6. `wget --directory-prefix=./image -c --trust-server-names 'https://downloads.raspberrypi.org/raspbian_lite_latest'`
7. `echo "DISTRO_NAME=zynthianos" > .env`
8. `sudo docker-compose up -d`
9. `sudo docker exec -it zynthianos-build /CustomPiOS/nightly_build_scripts/custompios_nightly_build`

Thats it! a few hours later you have a zynthian image ready.

Official nightly build also uses this method.

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<div class="post-metadata">

**Author:** ![guysoft](https://discourse.zynthian.org/user_avatar/discourse.zynthian.org/guysoft/32/1094_2.png) [@guysoft](https://discourse.zynthian.org/u/guysoft)\
**Post date:** [December 10, 2018, 3:26pm UTC](https://discourse.zynthian.org/t/building-zynthian-image-now-works-with-docker/2499/3 "2018-12-10T15:26:17Z")

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There was a bug in the inscrutions.  
Step 7 should have been:  
7. `echo "DISTRO_NAME=zynthianos" > .env`  
Fixed

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**Author:** ![wyleu](https://discourse.zynthian.org/user_avatar/discourse.zynthian.org/wyleu/32/514_2.png) [@wyleu](https://discourse.zynthian.org/u/wyleu)\
**Post date:** [December 11, 2018, 2:32am UTC](https://discourse.zynthian.org/t/building-zynthian-image-now-works-with-docker/2499/4 "2018-12-11T02:32:07Z")

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Failed on build . . . .

umount: /distro/workspace/mount: target is busy  
(In some cases useful info about processes that  
use the device is found by lsof(8) or fuser(1).)  
++++ true  
++++ echo\_red -e ‘\nBUILD FAILED!\n’  
++++ echo -e -n ‘\e[91m’  
++++ echo -e ‘\nBUILD’ ‘FAILED!\n’

BUILD FAILED!

++++ echo -e -n ‘\e[0m’

[docker\_build\_fail.txt](https://discourse.zynthian.org/uploads/default/original/2X/e/ee265cee116d7d651dc3c18d4c8fb97c526ba36e.txt) (6.4 KB)

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<div class="post-metadata">

**Author:** ![guysoft](https://discourse.zynthian.org/user_avatar/discourse.zynthian.org/guysoft/32/1094_2.png) [@guysoft](https://discourse.zynthian.org/u/guysoft)\
**Post date:** [December 11, 2018, 10:30am UTC](https://discourse.zynthian.org/t/building-zynthian-image-now-works-with-docker/2499/5 "2018-12-11T10:30:11Z")

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`umount: /distro/workspace/mount: target is busy` suggests something is wrong with the container.  
Run:

```auto
docker rm -f zynthianos-build

```

And try again, if you still use zynthianos-build-build delete that too.,

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<div class="post-metadata">

**Author:** ![wyleu](https://discourse.zynthian.org/user_avatar/discourse.zynthian.org/wyleu/32/514_2.png) [@wyleu](https://discourse.zynthian.org/u/wyleu)\
**Post date:** [December 11, 2018, 10:47am UTC](https://discourse.zynthian.org/t/building-zynthian-image-now-works-with-docker/2499/6 "2018-12-11T10:47:23Z")

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New beast launched 10:34 (Tuesday )

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<div class="post-metadata">

**Author:** ![wyleu](https://discourse.zynthian.org/user_avatar/discourse.zynthian.org/wyleu/32/514_2.png) [@wyleu](https://discourse.zynthian.org/u/wyleu)\
**Post date:** [December 12, 2018, 6:01pm UTC](https://discourse.zynthian.org/t/building-zynthian-image-now-works-with-docker/2499/7 "2018-12-12T18:01:07Z")

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Ok i finally stopped it after over a day …

git submodule init  
Submodule ‘robtk’ (git://github.com/x42/robtk) registered for path ‘robtk’  
git submodule update  
Cloning into ‘/home/pi/zynthian-sw/plugins/fat1.lv2/robtk’…  
strip -s build/fat1.so

[zynthian\_build2.txt](https://discourse.zynthian.org/uploads/default/original/2X/6/644d63c5ba9d37f42d31523598b65cc9ad4d3f5f.txt) (3.2 KB)

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**Author:** ![guysoft](https://discourse.zynthian.org/user_avatar/discourse.zynthian.org/guysoft/32/1094_2.png) [@guysoft](https://discourse.zynthian.org/u/guysoft)\
**Post date:** [December 12, 2018, 9:48pm UTC](https://discourse.zynthian.org/t/building-zynthian-image-now-works-with-docker/2499/8 "2018-12-12T21:48:18Z")

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Looks ok in the nightly build:

```auto
03:39:29 make[3]: Entering directory '/home/pi/zynthian-sw/plugins/stepseq.lv2'
03:39:29 git submodule init
03:39:30 Submodule 'robtk' (git://github.com/x42/robtk) registered for path 'robtk'
03:39:30 git submodule update
03:39:30 echo "]; ." >> build/stepseq.ttl
03:39:30 cp -r modgui/* build/modgui/
03:39:31 Cloning into '/home/pi/zynthian-sw/plugins/stepseq.lv2/robtk'...
03:39:32 strip -s build/stepseq.so
03:39:33 Submodule path 'robtk': checked out '3abd3e14306d9eb01e95775a321b7fab4af78f57'
03:39:33 make[3]: Leaving directory '/home/pi/zynthian-sw/plugins/stepseq.lv2'
03:39:33 make[2]: Leaving directory '/home/pi/zynthian-sw/plugins/stepseq.lv2'
03:39:34 make[1]: Leaving directory '/home/pi/zynthian-sw/plugins/stepseq.lv2'
03:39:34 sudo: unable to resolve host f39a8248424b

```

The line is a little different, I’d try again, the code might have changed. Its not showing `strip -s build/fat1.so` there.

In general it looks like your build is working at this point, give or take its success.

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<div class="post-metadata">

**Author:** ![wyleu](https://discourse.zynthian.org/user_avatar/discourse.zynthian.org/wyleu/32/514_2.png) [@wyleu](https://discourse.zynthian.org/u/wyleu)\
**Post date:** [December 13, 2018, 8:37am UTC](https://discourse.zynthian.org/t/building-zynthian-image-now-works-with-docker/2499/9 "2018-12-13T08:37:55Z")

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I burn it to something … 😃

I hunted thew img file… The only one I found under the ZynthianOS folder.

But it does at least boot a pi!!

 ![IMG_20181213_102855](https://discourse.zynthian.org/uploads/default/original/2X/8/85c8de3164994ef6e5c408f9b1f79d73938c4306.jpeg)

And away it goes for another build (11:00 13/12/2018)

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<div class="post-metadata">

**Author:** ![wyleu](https://discourse.zynthian.org/user_avatar/discourse.zynthian.org/wyleu/32/514_2.png) [@wyleu](https://discourse.zynthian.org/u/wyleu)\
**Post date:** [December 13, 2018, 11:20am UTC](https://discourse.zynthian.org/t/building-zynthian-image-now-works-with-docker/2499/10 "2018-12-13T11:20:12Z")

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1. `sudo docker exec -it zynthianos-build /CustomPiOS/nightly_build_scripts/custompios_nightly_build`

+++ dirname /CustomPiOS/build\_custom\_os  
++ cd /CustomPiOS  
++ pwd

- DIR=/CustomPiOS
- /CustomPiOS/build
- ‘[’ -n ‘’ ‘]’
- LOG=build.log
- define SCRIPT
- IFS=’\n’
- read -r -d ‘’ SCRIPT
- true
- ‘[’ build.log ‘!=’ no ‘]’
- touch build.log  
touch: cannot touch ‘build.log’: No such file or directory

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<div class="post-metadata">

**Author:** ![guysoft](https://discourse.zynthian.org/user_avatar/discourse.zynthian.org/guysoft/32/1094_2.png) [@guysoft](https://discourse.zynthian.org/u/guysoft)\
**Post date:** [December 13, 2018, 9:25pm UTC](https://discourse.zynthian.org/t/building-zynthian-image-now-works-with-docker/2499/11 "2018-12-13T21:25:35Z")

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Can you show the output of `df` from the container,

its saying it can’t create `build.log` which suggest your mount pints for `/distro` are wrong.

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<div class="post-metadata">

**Author:** ![guysoft](https://discourse.zynthian.org/user_avatar/discourse.zynthian.org/guysoft/32/1094_2.png) [@guysoft](https://discourse.zynthian.org/u/guysoft)\
**Post date:** [December 13, 2018, 9:32pm UTC](https://discourse.zynthian.org/t/building-zynthian-image-now-works-with-docker/2499/12 "2018-12-13T21:32:08Z")

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1. It looks from the image installed something
2. The build has been broken the past few days, see: [https://jenkins.zynthian.org/job/ZynthianOS/](https://jenkins.zynthian.org/job/ZynthianOS/)  
Take it up with @jofemodo 😉

I think at the moment its good others can build. perhaps in the future it might be worth to shorten he build process so its easy to build at home. But for not I’d recommend making debuging of it easy first because every other commit @jofemodo does, the build breaks. That should be a rare event. Shortening the build might help it, but Zythian is HUGE, and the only real way to do that is to maintain a Debian software repository.

It might be worth making a docker container that boots the nightly image and lets everyone try out the nightly and debug it.

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<div class="post-metadata">

**Author:** ![wyleu](https://discourse.zynthian.org/user_avatar/discourse.zynthian.org/wyleu/32/514_2.png) [@wyleu](https://discourse.zynthian.org/u/wyleu)\
**Post date:** [December 14, 2018, 8:24am UTC](https://discourse.zynthian.org/t/building-zynthian-image-now-works-with-docker/2499/13 "2018-12-14T08:24:35Z")

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[zynthian\_docker\_df.txt](https://discourse.zynthian.org/uploads/default/original/2X/7/7b5acef6499333fcef3dededd27dee5d92395277.txt) (2.4 KB)

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<div class="post-metadata">

**Author:** ![guysoft](https://discourse.zynthian.org/user_avatar/discourse.zynthian.org/guysoft/32/1094_2.png) [@guysoft](https://discourse.zynthian.org/u/guysoft)\
**Post date:** [December 16, 2018, 12:29am UTC](https://discourse.zynthian.org/t/building-zynthian-image-now-works-with-docker/2499/14 "2018-12-16T00:29:35Z")

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That is df from your host system and not from the container. The issue you are having is because the mount points inside your container are most likely wrong.

Try this:

```
sudo docker inspect -f '{{ .Mounts }}' zynthianos-build

```

Should list a mount point.

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<div class="post-metadata">

**Author:** ![wyleu](https://discourse.zynthian.org/user_avatar/discourse.zynthian.org/wyleu/32/514_2.png) [@wyleu](https://discourse.zynthian.org/u/wyleu)\
**Post date:** [December 16, 2018, 11:09am UTC](https://discourse.zynthian.org/t/building-zynthian-image-now-works-with-docker/2499/15 "2018-12-16T11:09:53Z")

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wyleu@wyleu-HP-G72-Notebook-PC:~$ sudo docker inspect -f ‘{{.Mounts }}’ zynthianos-build

Error: No such object: zynthianos-build  
wyleu@wyleu-HP-G72-Notebook-PC:~$ cd ZynthianOS/  
wyleu@wyleu-HP-G72-Notebook-PC:~/ZynthianOS$ sudo docker inspect -f ‘{{.Mounts }}’ zynthianos-build

Error: No such object: zynthianos-build  
wyleu@wyleu-HP-G72-Notebook-PC:~/ZynthianOS$

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<div class="post-metadata">

**Author:** ![guysoft](https://discourse.zynthian.org/user_avatar/discourse.zynthian.org/guysoft/32/1094_2.png) [@guysoft](https://discourse.zynthian.org/u/guysoft)\
**Post date:** [December 16, 2018, 11:00am UTC](https://discourse.zynthian.org/t/building-zynthian-image-now-works-with-docker/2499/16 "2018-12-16T11:00:34Z")

</div>

It says the container os not there dude

`sudo docker ps -a`?

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<div class="post-metadata">

**Author:** ![wyleu](https://discourse.zynthian.org/user_avatar/discourse.zynthian.org/wyleu/32/514_2.png) [@wyleu](https://discourse.zynthian.org/u/wyleu)\
**Post date:** [December 16, 2018, 11:15am UTC](https://discourse.zynthian.org/t/building-zynthian-image-now-works-with-docker/2499/17 "2018-12-16T11:15:11Z")

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~/ZynthianOS/src$ sudo docker ps -a  
CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES  
fec5648853d0 redis:2.8 “docker-entrypoint.s…” 2 months ago Exited (255) 2 months ago 0.0.0.0:6379-\>6379/tcp distracted\_wright  
f21f214e4f0b redis:2.8 “docker-entrypoint.s…” 3 months ago Created confident\_lalande  
e51cc8cb1725 redis:2.8 “docker-entrypoint.s…” 3 months ago Exited (0) 2 months ago 0.0.0.0:6379-\>6379/tcp friendly\_babbage  
320ab0510c8a ubuntu “bash” 3 months ago Exited (130) 3 months ago agitated\_raman  
22c849d1da06 ubuntu “bash” 3 months ago Exited (0) 3 months ago festive\_archimedes  
baa461250855 ubuntu “bash” 3 months ago Exited (0) 3 months ago practical\_feynman  
8636120ff0e2 hello-world “/hello” 3 months ago Exited (0) 3 months ago zen\_jackson

cleared down, started again . . .

This run looks like it’s doing something 😃

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<div class="post-metadata">

**Author:** ![wyleu](https://discourse.zynthian.org/user_avatar/discourse.zynthian.org/wyleu/32/514_2.png) [@wyleu](https://discourse.zynthian.org/u/wyleu)\
**Post date:** [December 16, 2018, 1:15pm UTC](https://discourse.zynthian.org/t/building-zynthian-image-now-works-with-docker/2499/18 "2018-12-16T13:15:56Z")

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++++ grep 2018-11-13-raspbian-stretch-lite.img2  
++++ awk ‘{print $4-0}’  
+++ root\_offset=50331648  
+++ echo ‘Mounting image 2018-11-13-raspbian-stretch-lite.img on /distro/workspace/mount, offset for boot partition is 4194304, offset for root partition is 50331648’  
Mounting image 2018-11-13-raspbian-stretch-lite.img on /distro/workspace/mount, offset for boot partition is 4194304, offset for root partition is 50331648  
+++ sudo mount -o loop,offset=50331648 2018-11-13-raspbian-stretch-lite.img /distro/workspace/mount/  
+++ [[1 != \2]]  
++++ expr 50331648 - 4194304  
+++ sudo mount -o loop,offset=4194304,sizelimit=46137344 2018-11-13-raspbian-stretch-lite.img /distro/workspace/mount/boot  
mount: /distro/workspace/2018-11-13-raspbian-stretch-lite.img: failed to setup loop device: No such file or directory

- exit 1

Sorry that this is little more than an error msg dump . . .

Perhaps I should dispose of my docker installation and start again . . .

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<div class="post-metadata">

**Author:** ![Werewolf](https://discourse.zynthian.org/user_avatar/discourse.zynthian.org/werewolf/32/1751_2.png) [@Werewolf](https://discourse.zynthian.org/u/Werewolf)\
**Post date:** [December 16, 2018, 2:39pm UTC](https://discourse.zynthian.org/t/building-zynthian-image-now-works-with-docker/2499/19 "2018-12-16T14:39:26Z")

</div>

sudo modprobe loop ?

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<div class="post-metadata">

**Author:** ![wyleu](https://discourse.zynthian.org/user_avatar/discourse.zynthian.org/wyleu/32/514_2.png) [@wyleu](https://discourse.zynthian.org/u/wyleu)\
**Post date:** [December 16, 2018, 2:51pm UTC](https://discourse.zynthian.org/t/building-zynthian-image-now-works-with-docker/2499/20 "2018-12-16T14:51:09Z")

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No direct reply.

Tried that but I don’t see a loop module in lsmod after doing it . . .

and now I’m back to the instant error about the build.log… ☹

I’m sorry this has become just plain bewildering . . .  
Time to read a docker book. . . .

Again . . .

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<div class="post-metadata">

**Author:** ![Werewolf](https://discourse.zynthian.org/user_avatar/discourse.zynthian.org/werewolf/32/1751_2.png) [@Werewolf](https://discourse.zynthian.org/u/Werewolf)\
**Post date:** [December 16, 2018, 5:37pm UTC](https://discourse.zynthian.org/t/building-zynthian-image-now-works-with-docker/2499/21 "2018-12-16T17:37:27Z")

</div>

No such file or directory error gives missing loopback kernel module too. On device tree loopback nodes created?

# rmmod loop && ls /dev/loop\*

ls: /dev/loop\* ei saa kasutada: No such file or directory

# modprobe loop && ls /dev/loop\*

/dev/loop0 /dev/loop1 /dev/loop2 /dev/loop3 /dev/loop4 /dev/loop5 /dev/loop6 /dev/loop7 /dev/loop-control

[Next page](https://discourse.zynthian.org/t/building-zynthian-image-now-works-with-docker/2499.md?page=2)