update dev docker images tag, remove mac specific section

README.md

@@ -68,7 +68,7 @@ by clicking on `Run Workflow` selecting the respective branch.
 
 The docker image URLs are:
 
-- development image for git rev SHORT_REV: `ghcr.io/kadena-io/chainweb-node:sha-SHORT_REV` (private)
+- development image for git rev SHORT_REV: `ghcr.io/kadena-io/chainweb-node:sha-SHORT_REV-frozen` (private)
 - latest released ubuntu image: `ghcr.io/kadena-io/chainweb-node/ubuntu:latest` (public)
 - latest released alpine image: `ghcr.io/kadena-io/chainweb-node/alpine:latest` (public)
 
@@ -200,13 +200,6 @@ docker compose -f docker-compose.minimal.yaml up --remove-orphans -d
 # use --remove-orphans if you no longer need the full devnet containers and they're causing problems
 ```
 
-For MacOS with M1 chips you could use:
-
-```
-docker compose -f docker-compose.mac.minimal.yaml up --remove-orphans -d
-# use --remove-orphans if you no longer need the full devnet containers and they're causing problems
-```
-
 This instance features a single node, simulation mining client, and nginix proxy. It does not have a stratum profile or others from the main docker-compose.yaml at this time (profiles 'test' and 'pact' are present, but have not been tested with this compose file). It does utilize the the same environment variables (except the unused stratum port or the node replica counts).
 
 ## Database bind mount