add a healthcheck and resource limits

docker-compose.yml

@@ -8,10 +8,13 @@ services:
     # build:
     #   dockerfile: Dockerfile
     #   context: .
+
     ### override default 'geth' entrypoint to use a local devnet
+    ### with persistent blockchain and account data (--datadir flag)
     entrypoint: "geth --dev --datadir /root/.ethereum --http --http.api eth,web3,net --http.addr 0.0.0.0 --http.corsdomain 'https://remix.ethereum.org'"
     volumes:
       - "./geth-data:/root/.ethereum"
+
     ### keep to pass any env vars if necessary
     # env_file:
     #   - ".env"
@@ -23,7 +26,21 @@ services:
     networks:
       go-ethereum:
         ipv4_address: 172.25.0.2
-    restart: "no"
+    healthcheck:
+      ### test whether a tcp connection on the RPC port is successful
+      test: ["CMD-SHELL", "nc -w 1 -v localhost 8545 || exit 1"]
+      interval: 30s
+      timeout: 5s
+      retries: 3
+    deploy:
+      resources:
+        reservations:
+          cpus: "1"
+          memory: "1G"
+        limits:
+          cpus: "2"
+          memory: "2G"
+    restart: "on-failure:3"
 
 networks:
   go-ethereum: