refactor: update Docker entrypoint and improve shutdown logging

- Changed the entrypoint in Dockerfile to use ENTRYPOINT instead of CMD for better process management.
- Enhanced logging in AppModule, ProcessorsRootModule, and SchedulerRootModule to provide clearer shutdown messages.

Author: kastov

Dockerfile

@@ -72,4 +72,7 @@ COPY docker-entrypoint.sh ./
 RUN npm install pm2 -g \
     && npm link
 
-CMD [ "/bin/sh", "docker-entrypoint.sh" ]
+
+ENTRYPOINT [ "/bin/sh", "docker-entrypoint.sh" ]
+
+CMD [ "pm2-runtime", "start", "ecosystem.config.js", "--env", "production" ]

docker-entrypoint.sh

@@ -17,7 +17,5 @@ if ! npm run migrate:seed; then
     exit 1
 fi
 
-echo "Starting pm2..."
-pm2-runtime start ecosystem.config.js --env production
-
 echo "Entrypoint script completed."
+exec "$@"

src/app.module.ts

@@ -107,6 +107,6 @@ export class AppModule implements OnApplicationShutdown {
     private readonly logger = new Logger(AppModule.name);
 
     async onApplicationShutdown(signal?: string): Promise<void> {
-        this.logger.log(`Application shutdown signal: ${signal}`);
+        this.logger.log(`${signal} signal received, shutting down...`);
     }
 }

src/bin/processors/processors.root.module.ts

@@ -58,6 +58,6 @@ export class ProcessorsRootModule implements OnApplicationShutdown {
     private readonly logger = new Logger(ProcessorsRootModule.name);
 
     async onApplicationShutdown(signal?: string): Promise<void> {
-        this.logger.log(`Processor shutdown signal: ${signal}`);
+        this.logger.log(`${signal} signal received, shutting down...`);
     }
 }

src/bin/scheduler/scheduler.root.module.ts

@@ -65,6 +65,6 @@ export class SchedulerRootModule implements OnApplicationShutdown {
     private readonly logger = new Logger(SchedulerRootModule.name);
 
     async onApplicationShutdown(signal?: string): Promise<void> {
-        this.logger.log(`Scheduler shutdown signal: ${signal}`);
+        this.logger.log(`${signal} signal received, shutting down...`);
     }
 }