add entry-point service (#218)

Add new service for running a DHT entry point. Currently the entry point used broker image, but it could use an image created from the dht package. It needs a broker image created from `streamr-1.0` branch, and therefore the service can be started only if the images are built from that branch (like we do here https://github.com/streamr-dev/network/blob/21bacaeb4aaadc7d5b10a37591c5e464d674c819/.github/workflows/validate.yml#L137). 

This service doesn't work from command line at the moment as we have not deployed broker images from the `streamr-1.0` branch.

Author: teogeb

.github/workflows/ci.yaml

@@ -47,7 +47,8 @@ jobs:
       - name: Check out the repo
         uses: actions/[email protected]
       - name: Start Streamr Docker Stack
-        run: ./streamr-docker-dev/bin.sh start --wait --timeout 600
+        # TODO the entry-point service is temporarily disabled as broker images are not yet built from streamr-1.0 branch
+        run: ./streamr-docker-dev/bin.sh start --wait --timeout 600 --except entry-point
       - name: Collect docker logs on failure
         if: failure()
         uses: jwalton/[email protected]

docker-compose.yml

@@ -167,6 +167,27 @@ services:
             interval: 30s
             timeout: 10s
             retries: 20
+    entry-point:
+        # NOTE THIS IS NOT USABLE YET as streamr/broker-node:dev images are in brubeck era, not in streamr-1.0 era
+        # - we currently publish images only from main, not from streamr-1.0
+        # - i.e. in the current streamr/broker-node:dev image there is no "entry-point" script at all
+        # TODO could move entry-point.ts from broker/bin to dht/bin then create a dht docker image and then use it here
+        # - also remove "entry-point" from broker's package.json bin script list
+        # TODO add this as a dependency for all brokers
+        container_name: streamr-dev-entry-point
+        image: streamr/broker-node:dev
+        init: true
+        networks:
+            - streamr-network
+        restart: unless-stopped
+        ports:
+            - "40500:40500"
+        command: npm exec -- entry-point
+        healthcheck:
+            test: ["CMD", "curl", "${STREAMR_BASE_URL}:40500"]
+            interval: 1s
+            timeout: 5s
+            retries: 10
     broker-node-storage-1:
         container_name: streamr-dev-broker-node-storage-1
         image: streamr/broker-node:dev