html_url,issue_url,id,node_id,user,created_at,updated_at,author_association,body,reactions,issue,performed_via_github_app
https://github.com/simonw/datasette/issues/1272#issuecomment-808647937,https://api.github.com/repos/simonw/datasette/issues/1272,808647937,MDEyOklzc3VlQ29tbWVudDgwODY0NzkzNw==,9599,2021-03-27T04:23:19Z,2021-03-27T04:23:36Z,OWNER,"Part of the challenge here is only running if a Docker daemon is available. I think this pattern works, in `tests/test_dockerfile.py`:
```python
import httpx
import pathlib
import pytest
import subprocess

root = pathlib.Path(__file__).parent.parent

def docker_is_available():
    try:
        client = httpx.Client(
            transport=httpx.HTTPTransport(uds=""/var/run/docker.sock"")
        )
        client.get(""http://docker/info"")
        return True
    except httpx.ConnectError:
        return False


@pytest.fixture
def build_container():
    assert (root / ""Dockerfile"").exists()
    subprocess.check_call([
        ""docker"", ""build"", str(root), ""-t"", ""datasette-dockerfile-test""
    ])


@pytest.mark.skipif(not docker_is_available(),
    reason=""Docker is not available""
)
def test_dockerfile(build_container):
    output = subprocess.check_output([
        ""docker"", ""run"", ""datasette-dockerfile-test"", ""datasette"", ""--get"", ""/_memory?sql=select+1&shape=_array""
    ])
    assert False, ""Implement better assertion here""
```","{""total_count"": 0, ""+1"": 0, ""-1"": 0, ""laugh"": 0, ""hooray"": 0, ""confused"": 0, ""heart"": 0, ""rocket"": 0, ""eyes"": 0}",838245338,
https://github.com/simonw/datasette/issues/1272#issuecomment-808648974,https://api.github.com/repos/simonw/datasette/issues/1272,808648974,MDEyOklzc3VlQ29tbWVudDgwODY0ODk3NA==,9599,2021-03-27T04:29:42Z,2021-03-27T04:29:42Z,OWNER,"I'm skipping this for the moment because the new Dockerfile shape introduced in https://github.com/simonw/datasette/issues/1249#issuecomment-804404544 isn't compatible with this technique, since it installs Datasette from PyPI rather than directly from the repo.

Will need to change that if I want to do this unit tests thing.","{""total_count"": 0, ""+1"": 0, ""-1"": 0, ""laugh"": 0, ""hooray"": 0, ""confused"": 0, ""heart"": 0, ""rocket"": 0, ""eyes"": 0}",838245338,
https://github.com/simonw/datasette/issues/1272#issuecomment-1199115002,https://api.github.com/repos/simonw/datasette/issues/1272,1199115002,IC_kwDOBm6k_c5HeQr6,37748899,2022-07-29T10:22:58Z,2022-07-29T10:22:58Z,NONE,"> test_dockerfile.py



> I'm skipping this for the moment because the new Dockerfile shape introduced in [#1249 (comment)](https://github.com/simonw/datasette/issues/1249#issuecomment-804404544) isn't compatible with this technique, since it installs Datasette from PyPI rather than directly from the repo.
> 
> Will need to change that if I want to do this unit tests thing.

Hello,
can't you copy in a later step directly in the output directory, e.g. COPY test_dockerfile.py /usr/lib/python*/.. or something like that ? ","{""total_count"": 0, ""+1"": 0, ""-1"": 0, ""laugh"": 0, ""hooray"": 0, ""confused"": 0, ""heart"": 0, ""rocket"": 0, ""eyes"": 0}",838245338,