vsoch commented on issue #7191: [AIRFLOW-4030] second attempt to add singularity to airflow URL: https://github.com/apache/airflow/pull/7191#issuecomment-585946960 > I assume we can start singularity from the host and be able to forward this connection to inside the airlfow-testing container so that we can connect to it. With Kind - we are starting it from within the container (by forwarded docker socket) , but it could be started from the host as well (mongo, kerberos and others are started from the host using docker-compose configuration and then we can connect to them from the "airflow-testing" by specifying their service names (mongo/kerberos etc). Ah yes this is what I wanted to ask about, specifically: > I assume we can start singularity from the host and be able to forward this connection to inside the airlfow-testing container so that we can connect to it. Singularity is different from docker - it doesn't have a service or daemon, it's akin to an executable. It would be installed inside a container, and it wouldn't work to "start on the host and forward." > started from the host using docker-compose configuration and then we can connect to them from the "airflow-testing" by specifying their service names (mongo/kerberos etc). You mean to say that we start a container with Singularity installed via docker-compose, and then run as a service? I think it would work to run things internally, I'm not sure the extent to which you could issue interactions from the outside. This I think is something that we could do: 1. installing Singularity as a binary inside a container (these bases already exist) 2. running the container via docker-compose 3. But then running tests inside of that container Is this possible?
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