Add multi-arch builds

.drone.yml

@@ -45,14 +45,56 @@ trigger:
     - refs/tags/v*
 
 steps:
+  - name: build all binaries
+    image: golang:1.12
+    commands:
+      - make all
 
-  # Might consider moving this step into the previous pipeline
-  - name: push image
+  - name: push image - arm
     image: plugins/docker
     settings:
       repo: iamthefij/minitor-go
-      dockerfile: Dockerfile.multi-stage
       auto_tag: true
+      auto_tag_suffix: linux-arm
+      username:
+        from_secret: docker_username
+      password:
+        from_secret: docker_password
+      build_args:
+        - ARCH=arm
+        - REPO=arm32v7
+
+  - name: push image - arm64
+    image: plugins/docker
+    settings:
+      repo: iamthefij/minitor-go
+      auto_tag: true
+      auto_tag_suffix: linux-arm64
+      username:
+        from_secret: docker_username
+      password:
+        from_secret: docker_password
+      build_args:
+        - ARCH=arm64
+        - REPO=arm64v8
+
+  - name: push image - amd64
+    image: plugins/docker
+    settings:
+      repo: iamthefij/minitor-go
+      auto_tag: true
+      auto_tag_suffix: linux-amd64
+      username:
+        from_secret: docker_username
+      password:
+        from_secret: docker_password
+
+  - name: publish manifest
+    image: plugins/manifest
+    settings:
+      spec: manifest.tmpl
+      auto_tag: true
+      ignore_missing: true
       username:
         from_secret: docker_username
       password:

.gitignore

@@ -16,4 +16,6 @@
 config.yml
 
 # Output binary
-minitor-go
+minitor
+minitor-linux-*
+minitor-darwin-amd64

Dockerfile

@@ -3,10 +3,6 @@ FROM ${REPO}/alpine:3.10
 RUN mkdir /app
 WORKDIR /app/
 
-# Copy minitor in
-ARG ARCH=amd64
-COPY ./minitor-go ./minitor
-
 # Add common checking tools
 RUN apk --no-cache add bash=~5.0 curl=~7.66 jq=~1.6
 
@@ -17,6 +13,10 @@ RUN addgroup -S minitor && adduser -S minitor -G minitor
 COPY ./scripts /app/scripts
 RUN chmod -R 755 /app/scripts
 
+# Copy minitor in
+ARG ARCH=amd64
+COPY ./minitor-linux-${ARCH} ./minitor
+
 # Drop to non-root user
 USER minitor
 

Makefile

@@ -1,23 +1,28 @@
-.PHONY: all
 DOCKER_TAG ?= minitor-go-${USER}
+GIT_TAG_NAME := $(shell git tag -l --contains HEAD)
+GIT_SHA := $(shell git rev-parse HEAD)
+VERSION := $(if $(GIT_TAG_NAME),$(GIT_TAG_NAME),$(GIT_SHA))
+
+.PHONY: all
+all: minitor-linux-amd64 minitor-linux-arm minitor-linux-arm64
 
 .PHONY: default
 default: test
 
 .PHONY: build
-build:
-	go build
+build: minitor
 
-minitor-go:
-	go build
+minitor:
+	@echo Version: $(VERSION)
+	go build -ldflags '-X "main.version=${VERSION}"' -o minitor
 
 .PHONY: run
-run: minitor-go build
-	./minitor-go -debug
+run: minitor build
+	./minitor -debug
 
 .PHONY: run-metrics
-run-metrics: minitor-go build
-	./minitor-go -debug -metrics
+run-metrics: minitor build
+	./minitor -debug -metrics
 
 .PHONY: test
 test:
@@ -41,13 +46,56 @@ check:
 
 .PHONY: clean
 clean:
-	rm -f ./minitor-go
+	rm -f ./minitor
+	rm -f ./minitor-linux-*
+	rm -f ./minitor-darwin-amd64
 	rm -f ./coverage.out
 
 .PHONY: docker-build
 docker-build:
-	docker build -f ./Dockerfile.multi-stage -t $(DOCKER_TAG) .
+	docker build -f ./Dockerfile.multi-stage -t $(DOCKER_TAG)-linux-amd64 .
 
 .PHONY: docker-run
 docker-run: docker-build
 	docker run --rm -v $(shell pwd)/config.yml:/root/config.yml $(DOCKER_TAG)
+
+## Multi-arch targets
+
+# Arch specific go build targets
+minitor-darwin-amd64:
+	GOOS=darwin GOARCH=amd64 CGO_ENABLED=0 \
+		   go build -ldflags '-X "main.version=${VERSION}"' -a -installsuffix nocgo \
+		   -o minitor-darwin-amd64
+
+minitor-linux-amd64:
+	GOOS=linux GOARCH=amd64 CGO_ENABLED=0 \
+		   go build -ldflags '-X "main.version=${VERSION}"' -a -installsuffix nocgo \
+		   -o minitor-linux-amd64
+
+minitor-linux-arm:
+	GOOS=linux GOARCH=arm CGO_ENABLED=0 \
+		   go build -ldflags '-X "main.version=${VERSION}"' -a -installsuffix nocgo \
+		   -o minitor-linux-arm
+
+minitor-linux-arm64:
+	GOOS=linux GOARCH=arm64 CGO_ENABLED=0 \
+		   go build -ldflags '-X "main.version=${VERSION}"' -a -installsuffix nocgo \
+		   -o minitor-linux-arm64
+
+# Arch specific docker build targets
+.PHONY: docker-build-arm
+docker-build-arm: minitor-linux-arm
+	docker build --build-arg REPO=arm32v7 --build-arg ARCH=arm . -t ${DOCKER_TAG}-linux-arm
+
+.PHONY: docker-build-arm
+docker-build-arm64: minitor-linux-arm64
+	docker build --build-arg REPO=arm64v8 --build-arg ARCH=arm64 . -t ${DOCKER_TAG}-linux-arm64
+
+# Cross run on host architechture
+.PHONY: docker-run-arm
+docker-run-arm: docker-build-arm
+	docker run --rm -v /var/run/docker.sock:/var/run/docker.sock --name $(DOCKER_TAG)-run ${DOCKER_TAG}-linux-arm
+
+.PHONY: docker-run-arm64
+docker-run-arm64: docker-build-arm64
+	docker run --rm -v /var/run/docker.sock:/var/run/docker.sock --name $(DOCKER_TAG)-run ${DOCKER_TAG}-linux-arm64

manifest.tmpl

@@ -0,0 +1,25 @@
+image: iamthefij/minitor-go:{{#if build.tag}}{{trimPrefix "v" build.tag}}{{else}}latest{{/if}}
+{{#if build.tags}}
+tags:
+{{#each build.tags}}
+  - {{this}}
+{{/each}}
+{{/if}}
+manifests:
+  -
+    image: iamthefij/minitor-go:{{#if build.tag}}{{trimPrefix "v" build.tag}}-{{/if}}linux-amd64
+    platform:
+      architecture: amd64
+      os: linux
+  -
+    image: iamthefij/minitor-go:{{#if build.tag}}{{trimPrefix "v" build.tag}}-{{/if}}linux-arm64
+    platform:
+      architecture: arm64
+      os: linux
+      variant: v8
+  -
+    image: iamthefij/minitor-go:{{#if build.tag}}{{trimPrefix "v" build.tag}}-{{/if}}linux-arm
+    platform:
+      architecture: arm
+      os: linux
+      variant: v7