From 7d2bc4905a467b7491e6fab1c85df85f2041c85f Mon Sep 17 00:00:00 2001
From: stefanprodan <stefan.prodan@gmail.com>
Date: Wed, 20 May 2020 16:41:32 +0300
Subject: [PATCH] Push releases to Docker Hub for ARM64 and ARM v6/v7

---
 .github/workflows/{build.yml => push.yml} | 13 +++++++------
 Dockerfile                                |  4 ++--
 README.md                                 |  1 +
 e2e/build.sh                              |  4 +++-
 4 files changed, 13 insertions(+), 9 deletions(-)
 rename .github/workflows/{build.yml => push.yml} (63%)

diff --git a/.github/workflows/build.yml b/.github/workflows/push.yml
similarity index 63%
rename from .github/workflows/build.yml
rename to .github/workflows/push.yml
index cf1f90a..85f4b5b 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/push.yml
@@ -1,20 +1,21 @@
-name: build
+name: multi-arch-build
 
 on:
   push:
-    branches: '*'
+    tags: '*'
 
 jobs:
-  build:
+  build-push:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v2
       - uses: crazy-max/ghaction-docker-buildx@v1
-      - name: build
+      - name: buildx
         run: |
           echo "${{ secrets.DOCKER_PASSWORD }}" | docker login --username "${{ secrets.DOCKER_USERNAME }}" --password-stdin
           docker buildx build --platform "linux/amd64,linux/arm/v6,linux/arm/v7,linux/arm64" \
             --output "type=image,push=true" \
-            --build-arg "REVISION=${GITHUB_SHA::8}" \
-            --tag "docker.io/stefanprodan/podinfo:multiarch" \
+            --build-arg "REVISION=${GITHUB_SHA}" \
+            --tag "docker.io/stefanprodan/podinfo:${GITHUB_REF#refs/tags/}" \
+            --tag "docker.io/stefanprodan/podinfo:latest" \
             --file Dockerfile .
diff --git a/Dockerfile b/Dockerfile
index 1760d6c..becd468 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,4 +1,4 @@
-FROM --platform=${TARGETPLATFORM:-linux/amd64} golang:1.14-alpine as builder
+FROM golang:1.14-alpine as builder
 
 ARG REVISION
 
@@ -18,7 +18,7 @@ RUN CGO_ENABLED=0 go build -ldflags "-s -w \
     -X github.com/stefanprodan/podinfo/pkg/version.REVISION=${REVISION}" \
     -a -o bin/podcli cmd/podcli/*
 
-FROM --platform=${TARGETPLATFORM:-linux/amd64} alpine:3.11
+FROM alpine:3.11
 
 RUN addgroup -S app \
     && adduser -S -g app app \
diff --git a/README.md b/README.md
index 581b7cb..2cd0008 100644
--- a/README.md
+++ b/README.md
@@ -22,6 +22,7 @@ Specifications:
 * Helm and Kustomize installers
 * End-to-End testing with Kubernetes Kind and Helm
 * Kustomize testing with GitHub Actions and Open Policy Agent
+* Multi-arch container image with Docker buildx and Github Actions
 
 Web API:
 
diff --git a/e2e/build.sh b/e2e/build.sh
index 9b6523c..ed856e8 100755
--- a/e2e/build.sh
+++ b/e2e/build.sh
@@ -2,5 +2,7 @@
 
 set -o errexit
 
-docker build -t test/podinfo:latest .
+GIT_COMMIT=$(git rev-list -1 HEAD)
+
+docker build -t test/podinfo:latest --build-arg "REVISION=${GIT_COMMIT}" .