1.3.3,1.3(1.3/Dockerfile)1.3.3-onbuild,1.3-onbuild(1.3/onbuild/Dockerfile)1.3.3-cross,1.3-cross(1.3/cross/Dockerfile)1.3.3-wheezy,1.3-wheezy(1.3/wheezy/Dockerfile)1.4.2,1.4,1,latest(1.4/Dockerfile)1.4.2-onbuild,1.4-onbuild,1-onbuild,onbuild(1.4/onbuild/Dockerfile)1.4.2-cross,1.4-cross,1-cross,cross(1.4/cross/Dockerfile)1.4.2-wheezy,1.4-wheezy,1-wheezy,wheezy(1.4/wheezy/Dockerfile)
For more information about this image and its history, please see the relevant manifest file (library/golang) in the docker-library/official-images GitHub repo.
Go (a.k.a., Golang) is a programming language first developed at Google. It is a statically-typed language with syntax loosely derived from C, but with additional features such as garbage collection, type safety, some dynamic-typing capabilities, additional built-in types (e.g., variable-length arrays and key-value maps), and a large standard library.
The most straightforward way to use this image is to use a Go container as both the build and runtime environment. In your Dockerfile, writing something along the lines of the following will compile and run your project:
FROM golang:1.3-onbuild
This image includes multiple ONBUILD triggers which should cover most applications. The build will COPY . /usr/src/app, RUN go get -d -v, and RUN go install -v.
This image also includes the CMD ["app"] instruction which is the default command when running the image without arguments.
You can then build and run the Docker image:
docker build -t my-golang-app .
docker run -it --rm --name my-running-app my-golang-app
There may be occasions where it is not appropriate to run your app inside a container. To compile, but not run your app inside the Docker instance, you can write something like:
docker run --rm -v "$PWD":/usr/src/myapp -w /usr/src/myapp golang:1.3 go build -v
This will add your current directory as a volume to the container, set the working directory to the volume, and run the command go build which will tell go to compile the project in the working directory and output the executable to myapp. Alternatively, if you have a Makefile, you can run the make command inside your container.
docker run --rm -v "$PWD":/usr/src/myapp -w /usr/src/myapp golang:1.3 make
If you need to compile your application for a platform other than linux/amd64 (such as windows/386), this can be easily accomplished with the provided cross tags:
docker run --rm -v "$PWD":/usr/src/myapp -w /usr/src/myapp -e GOOS=windows -e GOARCH=386 golang:1.3-cross go build -v
Alternatively, you can build for multiple platforms at once:
docker run --rm -it -v "$PWD":/usr/src/myapp -w /usr/src/myapp golang:1.3-cross bash
$ for GOOS in darwin linux; do
> for GOARCH in 386 amd64; do
> go build -v -o myapp-$GOOS-$GOARCH
> done
> done
View license information for the software contained in this image.
This image is officially supported on Docker version 1.5.0.
Support for older versions (down to 1.0) is provided on a best-effort basis.
If you have any problems with or questions about this image, please contact us through a GitHub issue.
You can also reach many of the official image maintainers via the #docker-library IRC channel on Freenode.
You are invited to contribute new features, fixes, or updates, large or small; we are always thrilled to receive pull requests, and do our best to process them as fast as we can.
Before you start to code, we recommend discussing your plans through a GitHub issue, especially for more ambitious contributions. This gives other contributors a chance to point you in the right direction, give you feedback on your design, and help you find out if someone else is working on the same thing.