feat: Add apps proxy local development docs

docs/apps-proxy/overview.md

@@ -0,0 +1,60 @@
+# Apps proxy Architecture Overview
+
+- Serves for data apps authentication and authorization.
+- Typicall usage is to perform OIDC login through some OIDC provider (e.g Microsoft login, google login etc.)
+- Has possibility to add basic authorization which consists of password prompt on a web page.
+
+
+## Entrypoint
+
+[cmd/apps-proxy/main.go](../../cmd/apps-proxy/main.go)
+
+## Apps Proxy Options
+
+## Operations
+
+In `/etc/hosts` add this:
+
+```
+127.0.0.1 test.hub.keboola.local
+127.0.0.1 hub.keboola.local
+```
+In project directory run:
+
+```
+docker compose run --rm --service-ports dev --net=my-test bash
+```
+
+Inside this bash run:
+
+```
+make run-app-proxy
+```
+
+There is a sandboxes service mock in place which returns configuration of data app. Simply adjust the [provisioning/apps-proxy/dev/sandboxesMock.json](../../provisioning/apps-proxy/dev/sandboxesMock.json) if you want to change received configuration by local testing.
+
+Next clone this repository: GitHub - fsouza/docker-ssl-proxy: Builds a docker image that proxies SSL calls to another docker container (fork of bombbomb/docker-ssl-proxy) 
+
+In its directory run this:
+
+```
+docker build -t https-proxy .
+```
+
+And then in this command replace <containerid> with the id from earlier:
+
+```
+docker run --net=cli_default --rm \
+  --env DOMAIN=test.hub.keboola.local \
+  --env TARGET_HOST=<containerid> \
+  --env TARGET_HOST_HEADER=test.hub.keboola.local \
+  --env TARGET_PORT=8002 \
+  -p 443:443 \
+  --volume=./ca:/etc/nginx/ca \
+  --volume=./certs:/etc/nginx/certs \
+  https-proxy
+```
+
+Now the proxy should be available under https://test.hub.keboola.local/.
+
+