GitHub user dosubot[bot] added a comment to the discussion: Superset Dev Image
Not Exposing ECharts via API + Issues Connecting to Trino in Superset 5.0
<!-- Answer -->
The error happens because the virtual environment at `/app/.venv` (and its
`pip` executable) doesn't exist at the point in the Docker build when your
command runs. Superset images set up the virtual environment during their own
build process, so if you extend the image, you need to activate it before
installing packages.
The recommended way is to use the `uv` tool inside the activated environment.
In your Dockerfile, use:
```dockerfile
FROM apache/superset:latest
USER root
RUN . /app/.venv/bin/activate && \
uv pip install sqlalchemy-trino psycopg2-binary
```
This ensures the packages are installed in the correct Python environment that
Superset uses. If you're using an older Superset image (pre-4.1), replace `uv
pip install ...` with just `pip install ...` after activating the environment.
More details and examples are in the official docs and recent Dockerfile
updates
([source](https://github.com/apache/superset/blob/master/docs/docs/installation/docker-builds.mdx),
[source](https://github.com/apache/superset/pull/34908)).
If you still see the error, double-check your base image tag and confirm that
`/app/.venv` exists in the image you are extending.
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[](https://app.dosu.dev/a28d3c7e-a9d3-459e-9fb6-3a6f9ff4f357/ask?utm_source=github) [](https://cursor.com/link/prompt?text=The%20error%20happens%20because%20the%20virtual%20environment%20at%20%60/app/.venv%60%20%28and%20its%20%60pip%60%20executable%29%20doesn%27t%20exist%20at%20the%20point%20in%20the%20Docker%20build%20when%20your%20command%20runs.%20Superset%20images%20set%20up%20the%20virtual%20environment%20during%20their%20own%20build%20process%2C%20so%20if%20you%20extend%20the%20image%2C%20you%20need%20to%20activate%20it%20before%20installing%20packages.%0A%0AThe%20recommended%20way%20is%20to%20use%20the%20%60uv%60%20tool%20inside%20the%20activated%20environment.%20In%20your%20Dockerfile%2C%20use%3A%0A%0A%60%60%60dockerfile%0AFROM%20apache/superset%3Alatest%0A%0AUSER%20root%0A%0ARUN%20.%20/app/.venv/bin/activate%20%26%26%20%5C%0A%20%20%20%20uv%20pip%20install%20sqlal
chemy-trino%20psycopg2-binary%0A%60%60%60%0A%0AThis%20ensures%20the%20packages%20are%20installed%20in%20the%20correct%20Python%20environment%20that%20Superset%20uses.%20If%20you%27re%20using%20an%20older%20Superset%20image%20%28pre-4.1%29%2C%20replace%20%60uv%20pip%20install%20...%60%20with%20just%20%60pip%20install%20...%60%20after%20activating%20the%20environment.%20More%20details%20and%20examples%20are%20in%20the%20official%20docs%20and%20recent%20Dockerfile%20updates%20%28%5Bsource%5D%28https%3A//github.com/apache/superset/blob/master/docs/docs/installation/docker-builds.mdx%29%2C%20%5Bsource%5D%28https%3A//github.com/apache/superset/pull/34908%29%29.%0A%0AIf%20you%20still%20see%20the%20error%2C%20double-check%20your%20base%20image%20tag%20and%20confirm%20that%20%60/app/.venv%60%20exists%20in%20the%20image%20you%20are%20extending.) [](https://go.dosu.dev/discord-bot) [](https://twitter.com/intent/tweet?text=%40dosu_ai%20helped%20me%20solve%20this%20issue!&url=https%3A//github.com/apache/superset/discussions/36434)
GitHub link:
https://github.com/apache/superset/discussions/36434#discussioncomment-15176905
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