add deployment docs

Author: blankdots

Diff for: DEPLOYMENT.md

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+# Deployment of swift-broser-ui
+
+This repository consists of SD Connect main API components: `runner`, `sharing`, `request` as well as the `sd-connect-ui`.
+
+
+## Prerequisites
+
+[Hashicorp Vault](https://www.hashicorp.com/products/vault), [Redis](https://redis.io/) and [PostgreSQL DB](https://www.postgresql.org/) need to be setup. Their setup is documented as part of the installation.
+
+
+## Installation
+
+There are currently two types of installation:
+- [test environment](https://gitlab.ci.csc.fi/sds-dev/sd-connect/sd-connect-deployment/-/tree/main/test)
+- [prod environment](https://gitlab.ci.csc.fi/sds-dev/sd-connect/sd-connect-deployment/-/tree/main/prod)