[Nexthop] Add a Distro Image demo container example#911
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travisb-nexthop wants to merge 1 commit intofacebook:mainfrom
Open
[Nexthop] Add a Distro Image demo container example#911travisb-nexthop wants to merge 1 commit intofacebook:mainfrom
travisb-nexthop wants to merge 1 commit intofacebook:mainfrom
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<!-- Thanks for submitting a pull request! We appreciate you spending
the time to work on these changes. Please provide enough information so
that others can review your pull request. -->
**Pre-submission checklist**
- [X] I've ran the linters locally and fixed lint errors related to the
files I modified in this PR. You can install the linters by running `pip
install -r requirements-dev.txt && pre-commit install`
- [X] `pre-commit run`
<!-- Explain the motivation for making this change and any other context
that you think would help reviewers of your code. What existing problem
does the pull request solve? -->
This adds an example of an other_dependency which creates and runs a
custom container.
Here a simple clock service inside a container is added as this example.
<!-- Demonstrate the code is solid. Example: The exact commands you ran
and their output, screenshots / videos if the pull request changes the
user interface. How exactly did you verify that your PR solves the issue
you wanted to solve? -->
<!-- If a relevant Github issue exists for this PR, please make sure you
link that issue to this PR -->
Add this to the image manifest:
```
"other_dependencies": [
{ "execute": "examples/demo_container/build.sh" }
]
```
When the device boots, you can check the time:
```
[root@dut ~]# cat /var/clock/time.txt
________________________________________
| Current time is Thu Feb 5 18:34:43 2026 |
========================================
\
\
\
\
.-=-==--==--.
..-==" ,'o`) `.
,' `"' \
: ( `.__...._
| ) / `-=-.
: ,vv.-._ / / `---==-._
\/\/\/VV ^ d88`;' / `.
`` ^/d88P!' / , `._
^/ !' ,. , / "-,,__,,--'""""-.
^/ !' ,' \ . .( ( _ ) ) ) ) ))_,-.\
^(__ ,!',"' ;:+.:%:a. \:.. . ,' ) ) ) ) ,"' '
',,,'',' /o:::":%:%a. \:.:.: . ) ) _,'
"""' ;':::'' `+%%%a._ \%:%| ;.). _,-""
,-='_.-' ``:%::) )%:| /:._,"
(/(/" ," ,'_,'%%%: (_,'
( (//(`.___; \
\ \ ` `
`. `. `. :
\. . .\ : . . . :
\. . .: `.. . .:
`..:.:\ \:...\
;:.:.; ::...:
):%:: :::::;
__,::%:( :::::
,;:%%%%%%%: ;:%::
;,--""-.`\ ,=--':%:%:\
/" "| /-".:%%%%%%%\
;,-"'`)%%)
/" "|
[root@dut ~]#
```
travisb-nexthop
added a commit
to nexthop-ai/fboss
that referenced
this pull request
Feb 9, 2026
<!-- Thanks for submitting a pull request! We appreciate you spending the time to work on these changes. Please provide enough information so that others can review your pull request. --> **Pre-submission checklist** - [X] I've ran the linters locally and fixed lint errors related to the files I modified in this PR. You can install the linters by running `pip install -r requirements-dev.txt && pre-commit install` - [X] `pre-commit run` <!-- Explain the motivation for making this change and any other context that you think would help reviewers of your code. What existing problem does the pull request solve? --> Some kinds of builds require a privileged containers, such as builds which need to use containers within themselves. Make the component build containers all privileged. This requires making /etc/shadow root-readable because CentOS uses special permission capability overrides to read the file which are not configured in the host user namespace. <!-- Demonstrate the code is solid. Example: The exact commands you ran and their output, screenshots / videos if the pull request changes the user interface. How exactly did you verify that your PR solves the issue you wanted to solve? --> <!-- If a relevant Github issue exists for this PR, please make sure you link that issue to this PR --> Build the Demo Container other_dependency from facebook#911 which motivated this need.
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Pre-submission checklist
pip install -r requirements-dev.txt && pre-commit installpre-commit runSummary
This adds an example of an other_dependency which creates and runs a custom container.
Here a simple clock service inside a container is added as this example.
Test Plan
Add this to the image manifest:
When the device boots, you can check the time: