Support .devcontainer.json

.devcontainer/Dockerfile

@@ -3,7 +3,7 @@
 # Licensed under the MIT License. See https://go.microsoft.com/fwlink/?linkid=2090316 for license information.
 #-------------------------------------------------------------------------------------------------------------
 
-FROM golang:1.17-stretch
+FROM golang:1.17-bullseye
 
 # Avoid warnings by switching to noninteractive
 ENV DEBIAN_FRONTEND=noninteractive

go.mod

@@ -6,12 +6,12 @@ require (
 	github.com/blang/semver v3.5.1+incompatible
 	github.com/bradford-hamilton/dora v0.1.1
 	github.com/kyoh86/richgo v0.3.12 // indirect
-	github.com/mattn/go-isatty v0.0.18 // indirect
+	github.com/mattn/go-isatty v0.0.19 // indirect
 	github.com/rhysd/go-github-selfupdate v1.2.2
 	github.com/spf13/cobra v1.0.0
 	github.com/spf13/viper v1.4.0
 	github.com/stretchr/testify v1.8.2
-	golang.org/x/sys v0.8.0 // indirect
+	golang.org/x/sys v0.10.0 // indirect
 	gopkg.in/yaml.v2 v2.4.0 // indirect
 )
 

go.sum

@@ -82,6 +82,8 @@ github.com/mattn/go-isatty v0.0.17 h1:BTarxUcIeDqL27Mc+vyvdWYSL28zpIhv3RoTdsLMPn
 github.com/mattn/go-isatty v0.0.17/go.mod h1:kYGgaQfpe5nmfYZH+SKPsOc2e4SrIfOl2e/yFXSvRLM=
 github.com/mattn/go-isatty v0.0.18 h1:DOKFKCQ7FNG2L1rbrmstDN4QVRdS89Nkh85u68Uwp98=
 github.com/mattn/go-isatty v0.0.18/go.mod h1:W+V8PltTTMOvKvAeJH7IuucS94S2C6jfK/D7dTCTo3Y=
+github.com/mattn/go-isatty v0.0.19 h1:JITubQf0MOLdlGRuRq+jtsDlekdYPia9ZFsB8h/APPA=
+github.com/mattn/go-isatty v0.0.19/go.mod h1:W+V8PltTTMOvKvAeJH7IuucS94S2C6jfK/D7dTCTo3Y=
 github.com/matttproud/golang_protobuf_extensions v1.0.1/go.mod h1:D8He9yQNgCq6Z5Ld7szi9bcBfOoFv/3dc6xSMkL2PC0=
 github.com/mitchellh/go-homedir v1.1.0/go.mod h1:SfyaCUpYCn1Vlf4IUYiD9fPX4A5wJrkLzIz1N1q0pr0=
 github.com/mitchellh/mapstructure v1.1.2 h1:fmNYVwqnSfB9mZU6OS2O6GsXM+wcskZDuKQzvN1EDeE=
@@ -194,6 +196,8 @@ golang.org/x/sys v0.6.0 h1:MVltZSvRTcU2ljQOhs94SXPftV6DCNnZViHeQps87pQ=
 golang.org/x/sys v0.6.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
 golang.org/x/sys v0.8.0 h1:EBmGv8NaZBZTWvrbjNoL6HVt+IVy3QDQpJs7VRIw3tU=
 golang.org/x/sys v0.8.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
+golang.org/x/sys v0.10.0 h1:SqMFp9UcQJZa+pmYuAKjd9xq1f0j5rLcDIk0mj4qAsA=
+golang.org/x/sys v0.10.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
 golang.org/x/text v0.3.0 h1:g61tztE5qeGQ89tm6NTjjM9VPIm088od1l6aSorWRWg=
 golang.org/x/text v0.3.0/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ=
 golang.org/x/time v0.0.0-20190308202827-9d24e82272b4/go.mod h1:tRJNPiyCQ0inRvYxbN9jk5I+vvW/OXSQhTDSoE431IQ=

internal/pkg/devcontainers/devcontainer.go

@@ -0,0 +1,22 @@
+package devcontainers
+
+import (
+	"fmt"
+	"os"
+	"path/filepath"
+	"strings"
+)
+
+func getDevContainerJsonPath(folderPath string) (string, error) {
+	pathsToTest := []string{".devcontainer/devcontainer.json", ".devcontainer.json"}
+
+	for _, path := range pathsToTest {
+		devcontainerJsonPath := filepath.Join(folderPath, path)
+		devContainerJsonInfo, err := os.Stat(devcontainerJsonPath)
+		if err == nil && !devContainerJsonInfo.IsDir() {
+			return devcontainerJsonPath, nil
+		}
+	}
+
+	return "", fmt.Errorf("devcontainer.json not found. Looked for %s", strings.Join(pathsToTest, ","))
+}

internal/pkg/devcontainers/dockerutils.go

@@ -234,7 +234,10 @@ func ExecInDevContainer(containerID string, workDir string, args []string) error
 	localPath := sourceInfo.DevcontainerFolder
 
 	statusWriter.Printf("Getting user name")
-	devcontainerJSONPath := path.Join(localPath, ".devcontainer/devcontainer.json")
+	devcontainerJSONPath, err := getDevContainerJsonPath(localPath)
+	if err != nil {
+		return err
+	}
 	userName, err := GetDevContainerUserName(devcontainerJSONPath)
 	if err != nil {
 		return err

internal/pkg/devcontainers/remoteuri.go

@@ -57,7 +57,10 @@ func GetWorkspaceMountPath(folderPath string) (string, error) {
 		}
 	}
 
-	devcontainerDefinitionPath := filepath.Join(folderPath, ".devcontainer/devcontainer.json")
+	devcontainerDefinitionPath, err := getDevContainerJsonPath(folderPath)
+	if err != nil {
+		return "", fmt.Errorf("Error getting devcontainer definition path: %s", err)
+	}
 	buf, err := ioutil.ReadFile(devcontainerDefinitionPath)
 	if err != nil {
 		return "", fmt.Errorf("Error loading devcontainer definition: %s", err)

internal/pkg/devcontainers/snippet.go

@@ -320,6 +320,7 @@ func insertDockerfileSnippet(projectFolder string, dockerfileFilename string, sn
 	}
 
 	content := newContent.String()
+	// TODO - decide whether to support .devcontainer.json or just remove snippet support
 	values, err := getSubstitutionValuesFromFile(filepath.Join(projectFolder, ".devcontainer/devcontainer.json"))
 	if err != nil {
 		return fmt.Errorf("failed to get dev container values: %s", err)
@@ -358,6 +359,7 @@ func mergeJSON(projectFolder string, snippet *DevcontainerSnippet, relativeMerge
 		return err
 	}
 
+	// TODO - decide whether to support .devcontainer.json or just remove snippet support
 	values, err := getSubstitutionValuesFromFile(filepath.Join(projectFolder, ".devcontainer/devcontainer.json"))
 	if err != nil {
 		return fmt.Errorf("failed to get dev container values: %s", err)

internal/pkg/devcontainers/template.go

@@ -76,6 +76,7 @@ func getTemplatesFromFolder(folder string) ([]DevcontainerTemplate, error) {
 		if !fi.IsDir() {
 			return false
 		}
+		// TOODO - add support for templates with .devcontainer.json rather than .devcontainer folder
 		devcontainerJsonPath := filepath.Join(parentPath, fi.Name(), ".devcontainer/devcontainer.json")
 		devContainerJsonInfo, err := os.Stat(devcontainerJsonPath)
 		return err == nil && !devContainerJsonInfo.IsDir()