overwrite conf file every run

bitcoin.run

@@ -3,20 +3,15 @@
 export HOME="/var/lib/bitcoin"
 
 # gen random pw for rpc server
-DEFAULTPW=$(dd if=/dev/urandom bs=10 count=1 status=none | shasum | cut -b 1-20)
+RANDOMPW=$(dd if=/dev/urandom bs=10 count=1 status=none | shasum | cut -b 1-20)
 
-if [ ! -e "$HOME/bitcoin.conf" ]; then
-
-    echo "creating bitcoin.conf"
-
-    cat <<EOF > $HOME/bitcoin.conf
-rpcuser=${BITCOIND_RPC_USER:-rpcuser}
-rpcpassword=${BITCOIND_RPC_PASSWORD:-$DEFAULTPW}
+cat <<EOF > $HOME/bitcoin.conf
+rpcuser=${BITCOIND_RPCUSER:-rpcuser}
+rpcpassword=${BITCOIND_RPCPASSWORD:-$RANDOMPW}
 EOF
 
-fi
-
 chown -R bitcoin:bitcoin $HOME
+
 exec chpst -ubitcoin \
     bitcoind \
         -printtoconsole \