Golang World sample docker images example

This is a basic hello world sample for golang showing the image sizes created by various build process.

Creating docker images

1. Using golang:1.11

   • Building: docker build . -f Dockerfile-golang-1-11 -t golang-app:golang-1-11
   • Running: docker run golang-app:golang-1-11

2. Using golang:1.11-alpine

   • Building: docker build . -f Dockerfile-golang-1-11-alpine -t golang-app:golang-1-11-alpine
   • Running: docker run golang-app:golang-1-11-alpine

3. Using multistage build

   • Building: docker build . -f Dockerfile-golang-1-11-multi-stage -t golang-app:multistage
   • Running: docker run golang-app:multistage

View created docker images: docker images golang-app

 $ > docker images golang-app
 REPOSITORY          TAG                  IMAGE ID            CREATED             SIZE
 golang-app          multistage           669a33298ed2        9 seconds ago       5.93MB
 golang-app          golang-1-11-alpine   0bf45c1ca890        8 minutes ago       311MB
 golang-app          golang-1-11          4393168f3554        17 minutes ago      776MB

Ref: https://github.com/GoogleCloudPlatform/nodejs-docs-samples