Adding opensearch to Docker Compose

[aweiland]

📝 Description

Changes include:

• Added Opensearch and Dashboard/UI to docker compose

[sricharan-varanasi]

Just had a quick question, Andrew. While the existing services use the default network, is there a specific reason on why we are using a custom network for opensearch?

[aweiland]

Just had a quick question, Andrew. While the existing services use the default network, is there a specific reason on why we are using a custom network for opensearch?

It's a docker networking DNS thing for communication between containers