Improved daily rotation of Pino logs without using log rotate

Author: FlorianLeChat

docker/configuration/logrotate.conf

@@ -5,7 +5,7 @@
 FROM node:lts-alpine
 
 # Install system dependencies
-RUN apk add --no-cache logrotate openssl supercronic tzdata
+RUN apk add --no-cache openssl supercronic tzdata
 
 # Set the working directory to the website files
 WORKDIR /usr/src/app
@@ -29,7 +29,7 @@ RUN --mount=type=cache,target=.npm \
 RUN npx tsc --skipLibCheck scripts/create-fake-accounts.ts scripts/expired-files.ts scripts/outdated-notifications.ts && \
 	echo "*/5 * * * * node /usr/src/app/scripts/expired-files.js > /dev/null 2>&1" >> /var/spool/cron/crontabs/node && \
 	echo "*/5 * * * * node /usr/src/app/scripts/outdated-notifications > /dev/null 2>&1" >> /var/spool/cron/crontabs/node && \
-	echo "0 0 * * * logrotate -f /usr/src/app/docker/configuration/logrotate.conf -s /usr/src/app/docker/configuration/logrotate.status > /dev/null 2>&1" >> /var/spool/cron/crontabs/node
+	echo "0 0 * * * /usr/src/app/docker/scripts/logrotate.sh > /dev/null 2>&1" >> /var/spool/cron/crontabs/node
 
 # Add wait script to wait for other services to be ready
 ADD --chmod=0755 https://github.com/ufoscout/docker-compose-wait/releases/latest/download/wait /wait
@@ -39,5 +39,4 @@ USER node
 
 # Prepare project files and configuration to be built
 RUN npm run build && npm prune --production && \
-	chmod +x ./docker/scripts/entrypoint.sh && \
-	chmod 644 /usr/src/app/docker/configuration/logrotate.conf
+	chmod +x ./docker/scripts/entrypoint.sh ./docker/scripts/logrotate.sh

docker/scripts/Dockerfile

@@ -0,0 +1,37 @@
+#!/bin/sh
+
+echo "Copying application.log to $(date +"%Y-%m-%d").log..."
+
+# Go to logs directory
+cd logs
+
+# Copy content from source file to dated log file
+cp "application.log" "$(date +"%Y-%m-%d").log"
+
+# Clear the content of the source file
+> "application.log"
+echo "Source log has been cleared."
+
+# Get list of .log files, excluding application.log
+LOG_FILES=$(ls -1 *.log 2>/dev/null | grep -v "^application.log$")
+
+# Count number of log files
+LOG_COUNT=$(echo "$LOG_FILES" | wc -l)
+
+echo "$LOG_COUNT log files found."
+
+# Keep only the 14 newest by filename (sorted alphabetically, oldest first)
+if [ "$LOG_COUNT" -gt 14 ]; then
+	FILES_TO_DELETE=$(echo "$LOG_FILES" | sort | head -n $(($LOG_COUNT - 14)))
+
+	echo "Deleting old log files:"
+
+	for file in $FILES_TO_DELETE; do
+		echo " - Deleting $file"
+		rm -f "$file"
+	done
+else
+	echo "No log files to delete. Keeping all $LOG_COUNT files."
+fi
+
+echo "Done."