use sponge as recommended by the textfile scripts repo

Signed-off-by: Alexander Trost <[email protected]>

Author: galexrt

Dockerfile

@@ -15,7 +15,7 @@ LABEL org.opencontainers.image.authors="Alexander Trost <[email protected]>
     org.opencontainers.image.version="N/A"
 
 RUN apt-get -q update && \
-    apt-get install -y --no-install-recommends smartmontools nvme-cli jq moreutils git ca-certificates && \
+    apt-get install -y --no-install-recommends smartmontools nvme-cli jq moreutils git ca-certificates moreutils && \
     apt-get clean && \
     rm -rf /var/lib/apt/lists/* /tmp/* /var/tmp/* && \
     mkdir -p /scripts && \

entrypoint.sh

@@ -18,6 +18,6 @@ fi
 
 echo "Starting smartmon.sh loop ..."
 while true; do
-    "/scripts/${SCRIPT}" "${@}" > "/var/lib/node_exporter/${OUTPUT_FILENAME}.prom"
+    "/scripts/${SCRIPT}" "${@}" | sponge "/var/lib/node_exporter/${OUTPUT_FILENAME}.prom"
     sleep "${INTERVAL}"
 done