make sure yarn uses --no-progress

buffalo/cmd/generate/docker.go

@@ -31,6 +31,11 @@ var DockerCmd = &cobra.Command{
 			"docker":      dockerOptions.Style,
 			"asWeb":       webpack,
 			"withWepack":  webpack,
+			"withYarn":    false,
+		}
+
+		if _, err := os.Stat("yarn.lock"); err == nil {
+			data["withYarn"] = true
 		}
 
 		g, err := docker.New()

buffalo/cmd/new.go

@@ -153,6 +153,7 @@ func genNewFiles() error {
 		"withPop":     !app.SkipPop,
 		"withDep":     app.WithDep,
 		"withWebpack": !app.SkipWebpack && !app.API,
+		"withYarn":    app.WithYarn,
 		"dbType":      app.DBType,
 		"version":     Version,
 		"ciProvider":  app.CIProvider,

buffalo/cmd/setup.go

@@ -195,7 +195,7 @@ func yarnCheck() error {
 			return errors.Errorf("This application require yarn, and we could not find it installed on your system. We tried to install it for you, but ran into the following error:\n%s", err)
 		}
 	}
-	err = run(exec.Command("yarn", "install"))
+	err = run(exec.Command("yarn", "--no-progress", "install"))
 	if err != nil {
 		return errors.Errorf("We encountered the following error when trying to install your asset dependencies using yarn:\n%s", err)
 	}

generators/docker/multi/templates/Dockerfile.tmpl

@@ -8,7 +8,11 @@ WORKDIR $GOPATH/src/{{.packagePath}}
 {{if .withWebpack -}}
 # this will cache the npm install step, unless package.json changes
 ADD package.json .
-RUN npm install
+{{if .withYarn -}}
+RUN yarn install --no-progress
+{{else -}}
+RUN npm install --no-progress
+{{end -}}
 {{end -}}
 
 ADD . .

generators/docker/standard/templates/Dockerfile.tmpl

@@ -7,7 +7,11 @@ WORKDIR $GOPATH/src/{{.packagePath}}
 {{if .withWebpack -}}
 # this will cache the npm install step, unless package.json changes
 ADD package.json .
-RUN npm install
+{{if .withYarn -}}
+RUN yarn install --no-progress
+{{else -}}
+RUN npm install --no-progress
+{{end -}}
 {{end -}}
 {{end -}}