Image name are case sensitive

pkg/skaffold/docker/parse.go

@@ -119,7 +119,7 @@ func fromInstruction(node *parser.Node) from {
 	}
 
 	return from{
-		image: strings.ToLower(node.Next.Value),
+		image: node.Next.Value,
 		as:    strings.ToLower(as),
 	}
 }
@@ -129,17 +129,22 @@ func onbuildInstructions(nodes []*parser.Node) ([]*parser.Node, error) {
 
 	stages := map[string]bool{}
 	for _, from := range fromInstructions(nodes) {
-		stages[from.as] = true
+		// Stage names are case insensitive
+		stages[strings.ToLower(from.as)] = true
 
-		if from.image == "scratch" {
+		// `scratch` is case insensitive
+		if strings.ToLower(from.image) == "scratch" {
 			continue
 		}
 
-		if _, found := stages[from.image]; found {
+		// Stage names are case insensitive
+		if _, found := stages[strings.ToLower(from.image)]; found {
 			continue
 		}
 
 		logrus.Debugf("Checking base image %s for ONBUILD triggers.", from.image)
+
+		// Image names are case SENSITIVE
 		img, err := RetrieveImage(from.image)
 		if err != nil {
 			logrus.Warnf("Error processing base image for ONBUILD triggers: %s. Dependencies may be incomplete.", err)

pkg/skaffold/docker/parse_test.go

@@ -174,6 +174,21 @@ FROM nginx
 COPY . /
 `
 
+const fromScratch = `
+FROM scratch
+ADD ./file /etc/file
+`
+
+const fromScratchUppercase = `
+FROM SCRATCH
+ADD ./file /etc/file
+`
+
+const fromImageCaseSensitive = `
+FROM jboss/wildfly:14.0.1.Final
+ADD ./file /etc/file
+`
+
 type fakeImageFetcher struct {
 	fetched []string
 }
@@ -182,7 +197,7 @@ func (f *fakeImageFetcher) fetch(image string) (*v1.ConfigFile, error) {
 	f.fetched = append(f.fetched, image)
 
 	switch image {
-	case "ubuntu:14.04", "busybox", "nginx", "golang:1.9.2":
+	case "ubuntu:14.04", "busybox", "nginx", "golang:1.9.2", "jboss/wildfly:14.0.1.Final":
 		return &v1.ConfigFile{}, nil
 	case "golang:onbuild":
 		return &v1.ConfigFile{
@@ -437,6 +452,27 @@ func TestGetDependencies(t *testing.T) {
 			expected:    []string{"Dockerfile"},
 			fetched:     []string{"ubuntu:14.04"},
 		},
+		{
+			description: "from scratch",
+			dockerfile:  fromScratch,
+			workspace:   ".",
+			expected:    []string{"Dockerfile", "file"},
+			fetched:     nil,
+		},
+		{
+			description: "from scratch, ignoring case",
+			dockerfile:  fromScratchUppercase,
+			workspace:   ".",
+			expected:    []string{"Dockerfile", "file"},
+			fetched:     nil,
+		},
+		{
+			description: "case sensitive",
+			dockerfile:  fromImageCaseSensitive,
+			workspace:   ".",
+			expected:    []string{"Dockerfile", "file"},
+			fetched:     []string{"jboss/wildfly:14.0.1.Final"},
+		},
 	}
 
 	for _, test := range tests {