Docker: Upgrade to Bitcoin Core v0.18.1

Author: shesek

Dockerfile

@@ -23,10 +23,10 @@ RUN [ -n "$STANDALONE" ] || \
     && rm -r target/share \
     && mv -f target/* /opt/local/)
 
-ENV BITCOIN_VERSION 0.18.0
+ENV BITCOIN_VERSION 0.18.1
 ENV BITCOIN_FILENAME bitcoin-$BITCOIN_VERSION-x86_64-linux-gnu.tar.gz
 ENV BITCOIN_URL https://bitcoincore.org/bin/bitcoin-core-$BITCOIN_VERSION/$BITCOIN_FILENAME
-ENV BITCOIN_SHA256 5146ac5310133fbb01439666131588006543ab5364435b748ddfc95a8cb8d63f
+ENV BITCOIN_SHA256 600d1db5e751fa85903e935a01a74f5cc57e1e7473c15fd3e17ed21e202cfe5a
 ENV BITCOIN_ASC_URL https://bitcoincore.org/bin/bitcoin-core-$BITCOIN_VERSION/SHA256SUMS.asc
 ENV BITCOIN_PGP_KEY 01EA5486DE18A882D4C2684590C8019E36C2E964
 RUN [ -n "$STANDALONE" ] || \