Ah! Thanks that works.

I was using the ubuntu image (pandoc/core:latest-ubuntu), and somehow I 
keep getting 
```
CI runtime exec failed: exec failed: container_linux.go:380: starting 
container process caused: chdir to cwd ("/__w/path-to-repo/") set in 
config.json failed: no such file or directory: unknown 
Error: Process completed with exit code 126.
```
when executing 
```
apt install graphviz
```
(or any command that's apt related)
.

On Tuesday, August 30, 2022 at 1:31:50 AM UTC-4 Albert Krewinkel wrote:

> See this workflow for an example:
>
> https://github.com/tarleb/lua-filter-template/blob/main/.github/workflows/ci.yaml
>
>
>
>
> Am 30. August 2022 03:40:42 MESZ schrieb Cambridge Yang <
> thisi...-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>:
>>
>> Hi,
>>
>> I am using pandoc/core container in GitHub actions. 
>> The problem I'm facing is that I have a custom lua filter that invokes an 
>> external program (in my case, the graphviz's `dot` program). 
>> If I run the docker container it complains that it can't find `dot` --- 
>> which makes sense because the docker container does not ship with `dot`. 
>> Is there an easy way to install `dot` on in the temporary container? Or 
>> perhaps expose host's dot to the container? 
>>
>>

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