The README.md and application code have been updated to include instr…

…uctions and logging for using a specific RPC without having to recompile. This improves usability by allowing users to change the RPC at runtime. Also, added log.info to display the endpoint, this can be helpful in troubleshooting and ensuring correct configuration.

README.md

@@ -6,10 +6,13 @@
 
 ## Building
 
-- Place private key in `main/resources` (JSON/Array format, generated by solana-keygen)
+- Place private key (privateKey.json) in `main/resources` (JSON/Array format, generated by solana-keygen)
 - Set `application.endpoint` (RPC) & `application.privateKey` (file name) in application.properties
 
 - `docker build .`
 
 ## Running
 `docker run CONTAINER_NAME`
+
+## Running w/ Specific RPC (without recompiling)
+`docker run -e APPLICATION_ENDPOINT=YOURSOLANA_RPC_HERE CONTAINER_NAME`

src/main/java/markets/arcana/obcranker/ObCrankerApplication.java

@@ -49,6 +49,8 @@ public void crankEventHeapLoop() {
         }
         Account finalTradingAccount = tradingAccount;
 
+        log.info("RPC: {}", endpoint);
+
         scheduler.scheduleAtFixedRate(() -> {
             try {
                 // SOL/USDC