Error creating integration context with buildStrategy: routine on minikube

[lburgazzoli]

Installed camel-k on a brand new installation of minikube v1.0.1 with the following add-ons installed:

• addon-manager: enabled
• dashboard: enabled
• default-storageclass: enabled
• ingress: enabled
• registry: enabled
• storage-provisioner: enabled

When running an integration, the related context fails to be created because of:

"error":"stat /workspace: no such file or directory"

Full stack-trace:

{"level":"error","ts":1558282189.3706098,"logger":"camel-k","msg":"Unexpected error while creating a temporary dir","error":"stat /workspace: no such file or directory","stacktrace":"github.com/apache/camel-k/vendor/github.com/go-logr/zapr.(*zapLogger).Error\n\t/home/nferraro/gopaths/camel-k/src/github.com/apache/camel-k/vendor/github.com/go-logr/zapr/zapr.go:128\ngithub.com/apache/camel-k/pkg/util/log.Logger.Error\n\t/home/nferraro/gopaths/camel-k/src/github.com/apache/camel-k/pkg/util/log/log.go:70\ngithub.com/apache/camel-k/pkg/util/log.Error\n\t/home/nferraro/gopaths/camel-k/src/github.com/apache/camel-k/pkg/util/log/log.go:191\ngithub.com/apache/camel-k/pkg/builder.(*defaultBuilder).Build\n\t/home/nferraro/gopaths/camel-k/src/github.com/apache/camel-k/pkg/builder/builder.go:66\ngithub.com/apache/camel-k/pkg/controller/build.(*scheduleRoutineAction).build\n\t/home/nferraro/gopaths/camel-k/src/github.com/apache/camel-k/pkg/controller/build/schedule_routine.go:107"}

/cc @astefanutti

[astefanutti]

The routine build strategy is currently not supported with the kaniko publish strategy. The main reason is to support different installation paths, like OLM, in addition to kamel CLI, that prevent creating resources like PVCs before hand.

I plan to work on a service build strategy that would off-load the build controller in a separate service and decorate the routine build strategy.

In the meantime, we may want to improve the error handling, and fail fast when the --build-strategy option is set to routine for Kubernetes / Kaniko.

[lburgazzoli]

Relates to #681