Skip to content
Switch branches/tags

Latest commit


Git stats


Failed to load latest commit information.
Latest commit message
Commit time


Build Status

This repository contains sources for the Go App Engine Flex build pipeline. This build pipeline utilizes Google Cloud Build to produce the application image. The go-1.x.yaml configuration files are used in the build pipeline. User can now specify a Go version in app.yaml via runtime: go1.x, where 1.x can be 1.8, 1.9, etc. The resulting application image uses as the base image, which contains a minimal Linux, glibc-based system.

The builder image is tagged with supported Go major versions for builds to be able to target specific Go version to build against. Run the following gcloud command to list supported versions --

$ gcloud container images list-tags

Use only the Go major version tags e.g. 1.8, 1.9, instead of the unique version-datetime tags.

There are different ways to reuse the go1-builder image outside of AppEngine Flex. Here are a couple of examples.

Multi-stage Dockerfile

Read up on how to use Docker's multi-stage builds.

Following is a trivial example of a Dockerfile with multi-stage build using the go1-builder image to bring in the Go SDK. The Go SDK is located under /usr/local/go of the builder image.

FROM as builder

WORKDIR /go/src/app
COPY main.go .

RUN /usr/local/go/bin/go build -o app .

# Application image.

COPY --from=builder /go/src/app/app /usr/local/bin/app

CMD ["/usr/local/bin/app"]

Google Cloud Build

Read up on Google Cloud Build.

You can use one of the go-1.x.yaml files for configuration file. The builder image's ENTRYPOINT is the script, which expects a certain layout of the uploaded directory. In particular, it expects --

  • _gopath/src directory containing Go source files within package directory structure.
  • _gopath/main-package-path file containing the import path of the main application to be built.
  • top level directory can contain resource files that will be bundled into the application image's /app directory.

The build script will build the application as referenced in _gopath/main-package-path file and produce an application Dockerfile which the next step will run a docker build on.

You can customize your own cloudbuild.yaml file with your own Dockerfile.


Docker images for Go on Google App Engine







No releases published


No packages published