From a7e3f3046732188b7dedba57920c24028750453a Mon Sep 17 00:00:00 2001
From: Philipp Schmitt <philipp@schmitt.co>
Date: Wed, 11 Mar 2020 19:00:43 +0100
Subject: [PATCH] Add multiarch support + Daily builds with GitHub Actions

---
 .github/workflows/github-build.yml | 28 ++++++++++++++++
 buildx.sh                          | 54 ++++++++++++++++++++++++++++++
 2 files changed, 82 insertions(+)
 create mode 100644 .github/workflows/github-build.yml
 create mode 100755 buildx.sh

diff --git a/.github/workflows/github-build.yml b/.github/workflows/github-build.yml
new file mode 100644
index 0000000..a6f859a
--- /dev/null
+++ b/.github/workflows/github-build.yml
@@ -0,0 +1,28 @@
+name: GitHub Actions CI
+
+on:
+  push:
+  schedule:
+    - cron:  '0 6 * * *'
+
+jobs:
+  buildx:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout repo
+        uses: actions/checkout@master
+        with:
+          ref: ${{ github.ref }}
+
+      - name: Docker login
+        uses: azure/docker-login@v1
+        with:
+          username: ${{ secrets.DOCKER_USERNAME }}
+          password: ${{ secrets.DOCKER_PASSWORD }}
+
+      - name: Build docker container
+        env:
+          DOCKER_CLI_EXPERIMENTAL: enabled
+        run: |
+          curl -fsSL https://raw.githubusercontent.com/pschmitt/ci-setup-docker-buildx/master/setup.sh | bash
+          ./buildx.sh
diff --git a/buildx.sh b/buildx.sh
new file mode 100755
index 0000000..e5fb06b
--- /dev/null
+++ b/buildx.sh
@@ -0,0 +1,54 @@
+#!/usr/bin/env bash
+
+IMAGE_NAME="willfarrell/autoheal"
+
+usage() {
+  echo "Usage: $0"
+}
+
+array_join() {
+  local IFS="$1"
+  shift
+  echo "$*"
+}
+
+get_available_architectures() {
+  local image="$1"
+  local tag="${2:-latest}"
+
+  docker buildx imagetools inspect --raw "${image}:${tag}" | \
+    jq -r '.manifests[].platform | .os + "/" + .architecture + "/" + .variant' | \
+    sed 's#/$##' | sort
+}
+
+if [[ "${BASH_SOURCE[0]}" == "${0}" ]]
+then
+  set -ex
+
+  cd "$(readlink -f "$(dirname "$0")")" || exit 9
+
+  read -r base_image base_tag <<< \
+    "$(sed -nr 's/^FROM\s+([^:]+):?((\w+).*)\s*$/\1 \3/p' Dockerfile | head -1)"
+  # shellcheck disable=2207
+  platforms=($(get_available_architectures "$base_image" "$base_tag"))
+
+  PUSH_IMAGE=true
+  BUILD_TYPE=manual
+
+  if [[ "$TRAVIS" == "true" ]]
+  then
+    BUILD_TYPE=travis
+  elif [[ "$GITHUB_ACTIONS" == "true" ]]
+  then
+    BUILD_TYPE=github
+  fi
+
+  docker buildx build \
+    --platform "$(array_join "," "${platforms[@]}")" \
+    --output "type=image,push=${PUSH_IMAGE}" \
+    --no-cache \
+    --label=build-type="$BUILD_TYPE" \
+    --label=built-on="$HOSTNAME" \
+    --tag "${IMAGE_NAME}:latest" \
+    .
+fi