Make ckpool socket systemd native (persist after reboot)

installer

@@ -191,23 +191,22 @@ EOF
 
 chown -R "$CKPOOL_USER":"$CKPOOL_USER" "$APP_ROOT"
 
-# create the socket folder for CKPool so we can later parse the JSON output
-mkdir -p /var/run/ckpool
-chown ${CKPOOL_USER}:${CKPOOL_USER} /var/run/ckpool
-
 # make ckpmsg available to PHP
 ln -sf /opt/btc-solo/ckpool/src/ckpmsg /usr/local/bin/ckpmsg
 
-cat > /etc/systemd/system/ckpool.service <<EOF
+cat > /etc/systemd/system/ckpool.service <<'EOF'
 [Unit]
 Description=ckpool solo mining server
 After=network.target bitcoind.service
+Wants=bitcoind.service
 
 [Service]
-User=${CKPOOL_USER}
-Group=${CKPOOL_USER}
-WorkingDirectory=${APP_ROOT}/ckpool
-ExecStart=${APP_ROOT}/ckpool/src/ckpool -c ${APP_ROOT}/conf/ckpool.conf -B -s /var/run/ckpool
+User=ckpool
+Group=ckpool
+RuntimeDirectory=ckpool
+RuntimeDirectoryMode=0770
+WorkingDirectory=/opt/btc-solo/ckpool
+ExecStart=/opt/btc-solo/ckpool/src/ckpool -c /opt/btc-solo/conf/ckpool.conf -B -s /run/ckpool
 Restart=on-failure
 
 [Install]