Updating image location, bugfixing DOGECOIN_EXTRA_ARGS, comment

docker-compose-generator/docker-fragments/dogecoin.yml

@@ -4,9 +4,9 @@ services:
   dogecoind:
       restart: unless-stopped
       container_name: btcpayserver_dogecoind
-      image: btcpayserver/dogecoin:1.10.0
+      image: rockstardev/dogecoin:1.10.0
       environment:
-        BITCOIN_EXTRA_ARGS: |
+        DOGECOIN_EXTRA_ARGS: |
           rpcuser=ceiwHEbqWI83
           rpcpassword=DwubwWsoo3
           ${NBITCOIN_NETWORK:-regtest}=1
@@ -14,6 +14,9 @@ services:
           rpcport=22555
           port=22556
           whitelist=0.0.0.0/0
+          # Reducing memory usage of dogecoind. Don't try running this container without at least 2 GB of memory
+          # https://www.reddit.com/r/dogecoin/comments/5wynqe/reducing_memory_usage_of_dogecoind/
+          dbcache=50
       ports: 
         - "22555:22555"
       expose: