Always create working directory when using compat API

Docker/Moby always create the working directory, and some tools rely on that behavior (example, woodpecker/drone). Fixes #11842 Signed-off-by: Michael Scherer <[email protected]>
containers · Nov 12, 2021 · b1c0023 · b1c0023
1 parent 92da868
commit b1c0023
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diff --git a/pkg/api/handlers/compat/containers_create.go b/pkg/api/handlers/compat/containers_create.go
@@ -86,6 +86,8 @@ func CreateContainer(w http.ResponseWriter, r *http.Request) {
 		utils.Error(w, "Something went wrong.", http.StatusInternalServerError, errors.Wrap(err, "fill out specgen"))
 		return
 	}
+	// moby always create the working directory
+	sg.CreateWorkingDir = true
 
 	ic := abi.ContainerEngine{Libpod: runtime}
 	report, err := ic.ContainerCreate(r.Context(), sg)

diff --git a/pkg/specgen/generate/container_create.go b/pkg/specgen/generate/container_create.go
@@ -378,6 +378,9 @@ func createContainerOptions(ctx context.Context, rt *libpod.Runtime, s *specgen.
 	if s.WorkDir == "" {
 		s.WorkDir = "/"
 	}
+	if s.CreateWorkingDir {
+		options = append(options, libpod.WithCreateWorkingDir())
+	}
 	if s.StopSignal != nil {
 		options = append(options, libpod.WithStopSignal(*s.StopSignal))
 	}

diff --git a/pkg/specgen/specgen.go b/pkg/specgen/specgen.go
@@ -272,6 +272,10 @@ type ContainerStorageConfig struct {
 	// If unset, the default, /, will be used.
 	// Optional.
 	WorkDir string `json:"work_dir,omitempty"`
+	// Create the working directory if it doesn't exist.
+	// If unset, it doesn't create it.
+	// Optional.
+	CreateWorkingDir bool `json:"create_working_dir,omitempty"`
 	// StorageOpts is the container's storage options
 	// Optional.
 	StorageOpts map[string]string `json:"storage_opts,omitempty"`

diff --git a/test/python/docker/compat/test_containers.py b/test/python/docker/compat/test_containers.py
@@ -251,3 +251,17 @@ def test_mount_preexisting_dir(self):
         ctr.start()
         ret, out = ctr.exec_run(["stat", "-c", "%u:%g", "/workspace"])
         self.assertEqual(out.rstrip(), b'1042:1043', "UID/GID set in dockerfile")
+
+
+    def test_non_existant_workdir(self):
+        dockerfile = (B'FROM quay.io/libpod/alpine:latest\n'
+                      B'USER root\n'
+                      B'WORKDIR /workspace/scratch\n'
+                      B'RUN touch test')
+        img: Image
+        img, out = self.client.images.build(fileobj=io.BytesIO(dockerfile))
+        ctr: Container = self.client.containers.create(image=img.id, detach=True, command="top",
+                                                       volumes=["test_non_existant_workdir:/workspace"])
+        ctr.start()
+        ret, out = ctr.exec_run(["stat", "/workspace/scratch/test"])
+        self.assertEqual(ret, 0, "Working directory created if it doesn't exist")