Environment configurable cron

Author: RaniAgus

cron-entrypoint.sh

@@ -0,0 +1,15 @@
+#!/usr/bin/env sh
+
+# Exit immediately if a command exits with a failure status
+set -e
+
+# Set default values for environment variables controlling the cron schedule
+BOOTSTRAP_SCHEDULE=${BOOTSTRAP_SCHEDULE:-"*/5 * * * *"}
+HELLO_SCHEDULE=${HELLO_SCHEDULE:-"*/15 * * * * * *"}
+
+# Create the supercronic crontab file
+echo "${BOOTSTRAP_SCHEDULE} java -cp application.jar io.github.raniagus.example.bootstrap.Bootstrap" > ./crontab
+echo "${HELLO_SCHEDULE} echo 'Hello from supercronic!'" >> ./crontab
+
+# Run supercronic with the created crontab file
+supercronic "$@" ./crontab

cron.Dockerfile

@@ -34,6 +34,7 @@ WORKDIR /home/appuser
 
 COPY --from=builder /build/target/*-with-dependencies.jar ./application.jar
 
-COPY crontab .
+COPY cron-entrypoint.sh .
 
-ENTRYPOINT ["supercronic", "-passthrough-logs", "crontab"]
+ENTRYPOINT ["sh", "cron-entrypoint.sh"]
+CMD ["-passthrough-logs"]