Switch Prysm VC to REST API

[nflaig]

I am using eth-docker to do interop testing between Lodestar and other clients. For that I am using the vc only files which works great and makes interop testing really smooth but I noticed the prysm-vc-only.yml always has builder enabled and there is no option to enable the REST API which is required to work with other clients.

https://github.com/eth-educators/eth-docker/blob/38982d69e22b669d4aeb45ac0e1a949dfb43e842/prysm-vc-only.yml#L71

Wondering if it makes sense to support a interop mode for prysm, although I can't tell if anyone besides me would actually use that. If not I think this issue can be closed by just removing the builder flag as it is already set in the entrypoint script

https://github.com/eth-educators/eth-docker/blob/38982d69e22b669d4aeb45ac0e1a949dfb43e842/prysm/docker-entrypoint-vc.sh#L33-L35

Just dropping my git diff here to make it work

diff --git a/prysm-vc-only.yml b/prysm-vc-only.yml
index 80dfc02..f5650eb 100644
--- a/prysm-vc-only.yml
+++ b/prysm-vc-only.yml
@@ -61,13 +61,15 @@ services:
       - --grpc-gateway-port
       - ${KEY_API_PORT:-7500}
       - --grpc-gateway-corsdomain=*
-      - --beacon-rpc-gateway-provider
-      - consensus:5052
+#      - --beacon-rpc-gateway-provider
+#      - consensus:5052
       - --suggested-fee-recipient
       - ${FEE_RECIPIENT}
-      - --enable-builder
       - --wallet-password-file
       - /var/lib/prysm/password.txt
+      - --beacon-rest-api-provider
+      - ${CL_NODE}
+      - --enable-beacon-rest-api
     labels:
       - traefik.enable=true
       - traefik.http.routers.prysm.entrypoints=web,websecure
@@ -140,8 +142,8 @@ services:
       - --${NETWORK}
       - --backup-dir=/validator_keys
       - --backup-password-file=/var/lib/prysm/password.txt
-    depends_on:
-      - consensus
+#    depends_on:
+#      - consensus

   validator-keys:
     profiles: ["tools"]

[yorickdowne]

Beacon REST API is still experimental for the VC, is it not? I am keen to switch Prysm to work with other CLs, but until that's the recommended way to run it, I'd rather not.

--enable-beacon-rest-api Experimental enable of the beacon REST API when querying a beacon node (default: false)

For now, you can make changes and git commit those for your testing runs, or create your own yml file and commit that.

[nflaig]

Beacon REST API is still experimental for the VC, is it not?

Yes, in fact, only their latest release works with Lodestar as there were some issues previously. Don't know about other clients. But I also don't think this can be a recommended mode right now for a wider audience. Attestations work quite well, haven't tested block production / sync committee yet.

For now, you can make changes and git commit those for your testing runs, or create your own yml file and commit that.

Sounds good, although I don't mind having local diff