[PicaMetrics] Fix sed pipe ambiguity in entrypoint

pica-metrics-bot/entrypoint.sh

@@ -22,10 +22,10 @@ if [ -z "${MATTERMOST_PASSWORD}" ]; then
 	exit 1
 fi
 
-sed -i s|INFLUXDB_USER|${INFLUXDB_USER}|g /code/config/config.json
-sed -i s|INFLUXDB_PASSWORD|${INFLUXDB_PASSWORD}|g /code/config/config.json
-sed -i s|MATTERMOST_USER|${MATTERMOST_USER}|g /code/config/config.json
-sed -i s|MATTERMOST_PASSWORD|${MATTERMOST_PASSWORD}|g /code/config/config.json
+sed -i "s/INFLUXDB_USER/${INFLUXDB_USER}/g" /code/config/config.json
+sed -i "s/INFLUXDB_PASSWORD/${INFLUXDB_PASSWORD}/g" /code/config/config.json
+sed -i "s/MATTERMOST_USER/${MATTERMOST_USER}/g" /code/config/config.json
+sed -i "s/MATTERMOST_PASSWORD/${MATTERMOST_PASSWORD}/g" /code/config/config.json
 
 INTERVAL_SECONDS=${INTERVAL_SECONDS:-60}