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The example given here does not take into account running in a CI/CD environment - <https://www.pulumi.com/blog/build-publish-containers-iac/>

I think you need to create a custom docker image with both dotnet and docker in it and then tell circle to use this image for building: <https://circleci.com/docs/2.0/custom-images/|https://circleci.com/docs/2.0/custom-images/>

Looks like you can just use the pulumi/pulumi for this.

<@U02AXQ1KNAJ> Thanks for replying - will give it a go

By running
```docker run -it --rm --name test --entrypoint /bin/bash  pulumi/pulumi```

I can see both `dotnet` and `docker` are available

Unfortunately it failed with
```+  docker:image:Image my-image creating Starting docker build and push...
 +  docker:image:Image my-image creating Logging in to registry...
 +  docker:image:Image my-image creating Executing ' docker version -f {{json .}}'
 +  docker:image:Image my-image creating {"Client":{"Platform":{"Name":"Docker Engine - Community"},"Version":"20.10.12","ApiVersion":"1.41","DefaultAPIVersion":"1.41","GitCommit":"e91ed57","GoVersion":"go1.16.12","Os":"linux","Arch":"amd64","BuildTime":"Mon Dec 13 11:45:48 2021","Context":"default","Experimental":true},"Server":null}
 +  docker:image:Image my-image creating error: Cannot connect to the Docker daemon at unix:///var/run/docker.sock. Is the docker daemon running?
 +  docker:image:Image my-image creating ' docker version -f {{json .}}' failed with exit code 1
 +  docker:image:Image my-image creating error: Pulumi.ResourceException: No 'docker' command available on PATH: Please install to use container 'build' mode.```

and a bit more context further down
```docker:image:Image (my-image):
    error: Cannot connect to the Docker daemon at unix:///var/run/docker.sock. Is the docker daemon running?
    error: Pulumi.ResourceException: No 'docker' command available on PATH: Please install to use container 'build' mode.
       at async Task&lt;bool&gt; Pulumi.Docker.Docker.UseDockerPasswordStdin(Resource logResource)+detectPasswordStdin(?)
       at async Task Pulumi.Docker.Docker.LoginToRegistry(ImageRegistryUnwrap registry, Resource logResource)+(?) =&gt; { }```


Docker is clearly available as `Version":"20.10.12` but no running?

<@U02STCT0PG9> this appears to be related to circle-ci's docker support. You're building a docker image _inside_ docker

You need to look up how to run docker in docker in circleci. This is a generic article which explains that a bit more:

<https://devopscube.com/run-docker-in-docker/>

a quick google tells me circle ci has a setup remote docker mechanism which may help, but I'm not familiar with circleci

Looks like you do not have access to the docker socket within your build container.. you'll have to figure out how to provide access or try an alternative approach (not building your image in pulumi)

Thanks for the advice both... will dig a bit more

Bingo! I had to follow this article <https://circleci.com/docs/2.0/building-docker-images/>

Specifically
```      - setup_remote_docker:
          version: 19.03.13```