Better use ONBUILD. (edc01378) · Commits · nimrod / cron-docker

Dockerfile

+1 −0

Original line number	Diff line number	Diff line
		@@ -16,4 +16,5 @@ USER nobody
		CMD [ "supersonic", "/crontab" ]
		HEALTHCHECK CMD pgrep supersonic
		RUN supersonic -test /crontab
		ONBUILD COPY crontab /crontab
		ONBUILD RUN supersonic -test /crontab

+6 −4

Original line number	Diff line number	Diff line
		@@ -18,14 +18,16 @@ FROM alpine:latest
		COPY --from=supersonic /usr/local/bin/supersonic /usr/local/bin/
		```

		The other pattern is building on top of this image to run some periodic tasks
		like so:
		The other pattern is building on top of this image to run some periodic tasks.
		The `ONBUILD` commands will copy the crontab file and validate it. Just copy
		whatever scripts and install whatever packages you need, like so:

		```
		FROM registry.shore.co.il/cron
		RUN apk add --update --no-cache aws-cli
		COPY crontab /crontab
		COPY script /usr/local/bin/
		USER root
		RUN apk add --update --no-cache aws-cli
		USER nobody
		```

		## License