Merge pull request #121 from gtardif/docker-classic

delegate Moby to docker-classic binary, link docker-classic in e2e tests

Makefile

@@ -64,10 +64,13 @@ cache-clear: ## Clear the builder cache
 lint: ## run linter(s)
 	docker run --rm -t -v $(PWD):/app -w /app golangci/golangci-lint:v1.27-alpine golangci-lint run --timeout 10m0s ./...
 
+classic-link: ## create docker-classic symlink if does not already exist
+	ln -s /usr/local/bin/docker-classic /Applications/Docker.app/Contents/Resources/bin/docker
+
 help: ## Show help
 	@echo Please specify a build target. The choices are:
 	@grep -E '^[0-9a-zA-Z_-]+:.*?## .*$$' $(MAKEFILE_LIST) | awk 'BEGIN {FS = ":.*?## "}; {printf "\033[36m%-30s\033[0m %s\n", $$1, $$2}'
 
 FORCE:
 
-.PHONY: all protos cli e2e-local cross test cache-clear lint help
+.PHONY: all protos cli e2e-local cross test cache-clear lint help classic-link

README.md

@@ -16,6 +16,9 @@ If you don't have or want to use Docker for building you need to make sure you h
 
 And then you can call the same make targets but you need to pass it the `builder.Makefile` (`make -f builder.Makefile`).
 
+The new CLI delegates to the classic docker for default contexts ; delegation is done to `docker-classic`. 
+* `make classic-link` will create a `docker-classic` link in `/usr/local/bin` if you don't already have it from Docker Desktop
+
 ## Building the project
 
 ```bash

cli/main.go

@@ -180,7 +180,7 @@ func execMoby(ctx context.Context) {
 	// Only run original docker command if the current context is not
 	// ours.
 	if err != nil {
-		cmd := exec.Command("docker", os.Args[1:]...)
+		cmd := exec.Command("docker-classic", os.Args[1:]...)
 		cmd.Stdin = os.Stdin
 		cmd.Stdout = os.Stdout
 		cmd.Stderr = os.Stderr

tests/framework/helper.go

@@ -1,7 +1,9 @@
 package framework
 
 import (
+	"fmt"
 	"log"
+	"os"
 	"strings"
 
 	"github.com/robpike/filter"
@@ -36,4 +38,20 @@ func gomegaFailHandler(message string, callerSkip ...int) {
 //SetupTest Init gomega fail handler
 func SetupTest() {
 	gomega.RegisterFailHandler(gomegaFailHandler)
+
+	linkClassicDocker()
+}
+
+func linkClassicDocker() {
+	dockerOriginal := strings.TrimSuffix(NewCommand("which", "docker").ExecOrDie(), "\n")
+	_, err := NewCommand("rm", "-r", "./bin/tests").Exec()
+	if err == nil {
+		fmt.Println("Removing existing /bin/tests folder before running tests")
+	}
+	_, err = NewCommand("mkdir", "-p", "./bin/tests").Exec()
+	gomega.Expect(err).To(gomega.BeNil())
+	NewCommand("ln", "-s", dockerOriginal, "./bin/tests/docker-classic").ExecOrDie()
+	newPath := "./bin/tests:" + os.Getenv("PATH")
+	err = os.Setenv("PATH", newPath)
+	gomega.Expect(err).To(gomega.BeNil())
 }