Meltano

Hey Everyone,
I’m trying to use our personal pypi server with and <https://meltano.slack.com/archives/CMN8HELB0/p1621481040038700?thread_ts=1621468192.037200&amp;cid=CMN8HELB0|per this thread> use the `PIP_EXTRA_INDEX_URL` - I can jump into the docker container and `pip install target-example`  however, when I try and `meltano install` it doesn’t seem to be able to find the package.

```version: 1
plugins:
  loaders:
  - name: target-example
    pip_url: target-example```

the dockerfile works
```FROM meltano/meltano:latest-python3.8
ARG PIP_EXTRA_INDEX_URL
ENV PIP_EXTRA_INDEX_URL $PIP_EXTRA_INDEX_URL
COPY meltano/meltano.yml meltano.yml
WORKDIR /project
RUN meltano install```
I see the `meltano.yml` in the docker container and I can install standard meltano tap/target but for some reason it doesn’t find the `target-example` from our other `pypi server`

when I run `meltano install` I get `Extractor 'tap-example' is not known to Meltano` :face_with_monocle:

but pip install works in that same container

Hi <@U06D1221E1W>. Just in case, I see "`target-example`" in your yaml sample, but is "`tap-example`" present in your meltano.yml?

<@U06D1221E1W> If `target-example` (or `tap-example`) is not supported out of the box by Meltano, you need to provide a little more information in `meltano.yml` for it to work: <https://meltano.com/docs/project.html#custom-plugin-definitions>

I recommend adding it using `meltano add --custom` as in <https://meltano.com/docs/plugin-management.html#custom-plugins>

<@U06BX9QQ4A3> that was my my typing mistake -

<@U06CE9BN604> thanks! I was reading that but I guess I missed an important step