Error: stacker exited with code 1 stacker version v0.40.3-5c91928 usernsexec-ing [u 0 1001 1 1 165537 65535 g 0 127 1 1 165537 65535 -- /opt/hostedtoolcache/stacker/0.40.3/x64/stacker --internal-userns --debug build --layer-type tar --layer-type squashfs -f stacker.yaml] stacker version v0.40.3-5c91928 initializing stacker recipe: stacker.yaml error: open stacker.yaml: no such file or directory couldn't read stacker file stackerbuild.io/stacker/pkg/types.NewStackerfile /stacker-tree/pkg/types/stackerfile.go:136 stackerbuild.io/stacker/pkg/types.NewStackerFiles /stacker-tree/pkg/types/stackerfiles.go:23 stackerbuild.io/stacker/pkg/stacker.(*Builder).BuildMultiple /stacker-tree/pkg/stacker/build.go:536 main.doBuild /stacker-tree/cmd/stacker/build.go:117 github.com/urfave/cli.HandleAction /stacker-tree/.build/gopath/pkg/mod/github.com/urfave/cli@v1.22.12/app.go:524 github.com/urfave/cli.Command.Run /stacker-tree/.build/gopath/pkg/mod/github.com/urfave/cli@v1.22.12/command.go:175 github.com/urfave/cli.(*App).Run /stacker-tree/.build/gopath/pkg/mod/github.com/urfave/cli@v1.22.12/app.go:277 main.main /stacker-tree/cmd/stacker/main.go:304 runtime.main /usr/lib/go/src/runtime/proc.go:267 runtime.goexit /usr/lib/go/src/runtime/asm_amd64.s:1650 error: exit status 1 stackerbuild.io/stacker/pkg/container.MaybeRunInNamespace /stacker-tree/pkg/container/userns.go:102 main.main.func3 /stacker-tree/cmd/stacker/main.go:299 github.com/urfave/cli.(*App).Run /stacker-tree/.build/gopath/pkg/mod/github.com/urfave/cli@v1.22.12/app.go:264 main.main /stacker-tree/cmd/stacker/main.go:304 runtime.main /usr/lib/go/src/runtime/proc.go:267 runtime.goexit /usr/lib/go/src/runtime/asm_amd64.s:1650