Ah! Thanks that works.<div><br></div><div>I was using the ubuntu image (pandoc/core:latest-ubuntu), and somehow I keep getting&nbsp;</div><div>```</div><div><div><div><div><div>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
</div></div><div><div>Error: Process completed with exit code 126.</div></div></div></div></div><div>```<br>when executing&nbsp;</div><div>```</div><div>apt install graphviz</div><div>```</div><div>(or any command that's apt related)</div><div>.</div><div><br></div><div class="gmail_quote"><div dir="auto" class="gmail_attr">On Tuesday, August 30, 2022 at 1:31:50 AM UTC-4 Albert Krewinkel wrote:<br/></div><blockquote class="gmail_quote" style="margin: 0 0 0 0.8ex; border-left: 1px solid rgb(204, 204, 204); padding-left: 1ex;"><div>See this workflow for an example:<br><a href="https://github.com/tarleb/lua-filter-template/blob/main/.github/workflows/ci.yaml" target="_blank" rel="nofollow" data-saferedirecturl="https://www.google.com/url?hl=en&amp;q=https://github.com/tarleb/lua-filter-template/blob/main/.github/workflows/ci.yaml&amp;source=gmail&amp;ust=1661927923523000&amp;usg=AOvVaw29PB1Ct-AJAC3t8tyF40uq">https://github.com/tarleb/lua-filter-template/blob/main/.github/workflows/ci.yaml</a></div><div><br><br><br><br><div class="gmail_quote">Am 30. August 2022 03:40:42 MESZ schrieb Cambridge Yang &lt;<a href data-email-masked rel="nofollow">thisi...@gmail.com</a>&gt;:<blockquote class="gmail_quote" style="margin:0pt 0pt 0pt 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">
Hi,<div><br></div><div>I am using pandoc/core container in GitHub actions. </div><div>The problem I&#39;m facing is that I have a custom lua filter that invokes an external program (in my case, the graphviz&#39;s `dot` program). </div><div>If I run the docker container it complains that it can&#39;t find `dot` --- which makes sense because the docker container does not ship with `dot`. </div><div>Is there an easy way to install `dot` on in the temporary container? Or perhaps expose host&#39;s dot to the container? </div><div><br></div>

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