Set WORKDIR value in container definition

[brianredbeard]

Due to an outstanding bug in containerd (containerd/containerd#4669) there is a problem when the value WORKDIR is set and user namespaces are in effect.

More detail on this can be seen in: kubernetes-sigs/kind#1331

In the meantime, as a workaround in the event that WORKDIR cannot be set, the value workingDir: / can be added to the container spec in the KNative serving definition, e.g.:

spec:
  template:
    metadata:
      creationTimestamp: null
    spec:
      containerConcurrency: 0
      containers:
        - image: >-
            docker.io/n3wscott/sockeye:v0.7.0@sha256:e603d8494eeacce966e57f8f508e4c4f6bebc71d095e3f5a0a1abaf42c5f0e48
          name: user-container
          readinessProbe:
            successThreshold: 1
            tcpSocket:
              port: 0
          resources: {}
          workingDir: /

This sets WORKDIR/workingDir to a value which will not necessitate any additional operations within the container.

[n3wscott]

Interesting, the container was build with ko, so I don't have an easy way to adjust this.