scripts/bupmer: add a Dockerfile

Signed-off-by: Steve Kuznetsov <skuznets@redhat.com>

scripts/bumper/.gitignore

@@ -0,0 +1 @@
+bumper

scripts/bumper/Dockerfile

@@ -0,0 +1,14 @@
+FROM registry.ci.openshift.org/ocp/builder:rhel-8-golang-1.20-openshift-4.14 as builder
+
+WORKDIR /src
+COPY main.go go.mod ./
+RUN go build -o /bin/bumper -mod=mod ./...
+
+FROM quay.io/centos/centos:stream8
+
+RUN dnf install -y git glibc make
+COPY --from=builder /bin/bumper /usr/bin/bumper
+COPY --from=builder /usr/bin/go /usr/bin/go
+COPY --from=builder /usr/lib/golang /usr/lib/golang
+
+ENTRYPOINT ["bumper"]

scripts/bumper/main.go

@@ -105,7 +105,7 @@ func (o *options) Validate() error {
 	switch fetchMode(o.fetchMode) {
 	case ssh, https:
 	default:
-		return fmt.Errorf("--mode must be one of %v", []fetchMode{https, ssh})
+		return fmt.Errorf("--fetch-mode must be one of %v", []fetchMode{https, ssh})
 	}
 
 	if _, err := logrus.ParseLevel(o.logLevel); err != nil {