Source to image s2i - extended build

This repo is an example on HOW-TO use s2i to:

• build a GOLANG application using a builder image e.g. golang:1.15
• running the built GOLANG application using a runtime image e.g. registry.access.redhat.com/ubi8/ubi-minimal

First pull the builder and the runtime images:

docker pull golang:1.15
docker pull registry.access.redhat.com/ubi8/ubi-minimal

Then run s2i:

s2i build . golang:1.15 goserver --runtime-image registry.access.redhat.com/ubi8/ubi-minimal --runtime-artifact /go/bin/goserver

Finally start the application and test it:

docker run --rm -d -p 8080:8080 goserver
curl http://localhost:8080/

NOTE: we are using a builder image which is not an s2i ready image; it doesn't contain any s2i script nor has the io.openshift.s2i.scripts-url label set

References:

• https://github.com/openshift/source-to-image/blob/master/docs/runtime_image.md