Update example to show a more realistic implementation

.drone.yml

@@ -1,13 +1,38 @@
 kind: pipeline
-name: linux-amd64
+name: tests
+
+trigger:
+  event:
+    - push
+    - tag
 
 steps:
-  - name: get qemu
+  - name: run tests
     image: ubuntu:bionic
     commands:
       - apt-get update
-      - apt-get install -y make wget
-      - make build/qemu-x86_64-static
+      - apt-get install -y make
+      - make test
+
+---
+kind: pipeline
+name: linux-amd64
+
+depends_on:
+  - tests
+
+trigger:
+  branch:
+    - master
+  event:
+    - push
+    - tag
+
+steps:
+  - name: get qemu
+    image: busybox
+    commands:
+      - ./get_qemu.sh x86_64
 
   - name: build
     image: plugins/docker
@@ -24,13 +49,21 @@ steps:
 kind: pipeline
 name: linux-arm
 
+depends_on:
+  - tests
+
+trigger:
+  branch:
+    - master
+  event:
+    - push
+    - tag
+
 steps:
   - name: get qemu
-    image: ubuntu:bionic
+    image: busybox
     commands:
-      - apt-get update
-      - apt-get install -y make wget
-      - make build/qemu-arm-static
+      - ./get_qemu.sh arm
 
   - name: build
     image: plugins/docker
@@ -46,6 +79,40 @@ steps:
         - ARCH=arm
         - REPO=arm32v6
 
+---
+kind: pipeline
+name: linux-arm64
+
+depends_on:
+  - tests
+
+trigger:
+  branch:
+    - master
+  event:
+    - push
+    - tag
+
+steps:
+  - name: get qemu
+    image: busybox
+    commands:
+      - ./get_qemu.sh arm64
+
+  - name: build
+    image: plugins/docker
+    settings:
+      repo: iamthefij/multiarch-pipeline-test
+      auto_tag: true
+      auto_tag_suffix: linux-arm64
+      username:
+        from_secret: docker_username
+      password:
+        from_secret: docker_password
+      build_args:
+        - ARCH=arm64
+        - REPO=arm64v8
+
 ---
 kind: pipeline
 name: manifest
@@ -53,6 +120,14 @@ name: manifest
 depends_on:
   - linux-amd64
   - linux-arm
+  - linux-arm64
+
+trigger:
+  branch:
+    - master
+  event:
+    - push
+    - tag
 
 steps:
   - name: publish manifest

Makefile

@@ -7,27 +7,40 @@ default: test
 test:
 	@echo ok
 
-.PHONY: build
-build: build/qemu-x86_64-static
-	docker build . -t ${DOCKER_TAG}
+# Targets to download required qemu binaries for running on an amd64 machine
+build/qemu-x86_64-static:
+	./get_qemu.sh x86_64
 
 build/qemu-arm-static:
-	./get_qemu2.sh arm
-
-build/qemu-x86_64-static:
-	./get_qemu2.sh x86_64
+	./get_qemu.sh arm
 
 build/qemu-aarch64-static:
-	./get_qemu2.sh aarch64
+	./get_qemu.sh aarch64
 
+# Build Docker image for host architechture (amd64)
+.PHONY: build
+build: build/qemu-x86_64-static
+	docker build . -t ${DOCKER_TAG}-linux-amd64
+
+# Cross build for arm architechtures
 .PHONY: cross-build-arm
 cross-build-arm: build/qemu-arm-static
-	docker build --build-arg REPO=arm32v6 --build-arg ARCH=arm . -t ${DOCKER_TAG}-arm32v6
+	docker build --build-arg REPO=arm32v6 --build-arg ARCH=arm . -t ${DOCKER_TAG}-linux-arm
 
+.PHONY: cross-build-arm
+cross-build-arm64: build/qemu-aarch64-static
+	docker build --build-arg REPO=arm64v8 --build-arg ARCH=aarch64 . -t ${DOCKER_TAG}-linux-arm64
+
+# Run on host architechture
 .PHONY: run
 run: build
-	docker run ${DOCKER_TAG}
+	docker run ${DOCKER_TAG}-linux-amd64
 
-.PHONY: run
+# Cross run on host architechture
+.PHONY: cross-run-arm
 cross-run-arm: cross-build-arm
-	docker run --rm ${DOCKER_TAG}-arm32v6
+	docker run --rm ${DOCKER_TAG}-linux-arm
+
+.PHONY: cross-run-arm64
+cross-run-arm64: cross-build-arm64
+	docker run --rm ${DOCKER_TAG}-linux-arm64

get_qemu.sh

@@ -6,7 +6,7 @@ VERSION=v2.9.1-1
 mkdir -p build
 cd build
 
-for target_arch in aarch64 arm x86_64; do
+for target_arch in $*; do
   wget -N https://github.com/multiarch/qemu-user-static/releases/download/$VERSION/${HOST_ARCH}_qemu-${target_arch}-static.tar.gz
   tar -xvf ${HOST_ARCH}_qemu-${target_arch}-static.tar.gz
   rm ${HOST_ARCH}_qemu-${target_arch}-static.tar.gz

get_qemu2.sh

@@ -1,13 +0,0 @@
-#! /bin/bash
-
-HOST_ARCH=x86_64
-VERSION=v2.9.1-1
-
-mkdir -p build
-cd build
-
-for target_arch in $*; do
-  wget -N https://github.com/multiarch/qemu-user-static/releases/download/$VERSION/${HOST_ARCH}_qemu-${target_arch}-static.tar.gz
-  tar -xvf ${HOST_ARCH}_qemu-${target_arch}-static.tar.gz
-  rm ${HOST_ARCH}_qemu-${target_arch}-static.tar.gz
-done