harbor-core serves http on :80 only; the skopeo dest omitted the port so it dialed :443 and timed out. Pin the dest to :80 (with --dest-tls-verify=false).
harbor-core serves http on :80 only; the skopeo dest omitted the port so it dialed :443 and timed out. Pin the dest to :80 (with --dest-tls-verify=false).