add initial arm support

Signed-off-by: Andrei Kvapil <kvapss@gmail.com>

packages/core/installer/Makefile

@@ -25,6 +25,7 @@ image-cozystack:
 		--provenance false \
 		--tag $(REGISTRY)/cozystack:$(call settag,$(TAG)) \
 		--cache-from type=registry,ref=$(REGISTRY)/cozystack:latest \
+		--platform linux/amd64,linux/arm64 \
 		--cache-to type=inline \
 		--metadata-file images/cozystack.json \
 		--push=$(PUSH) \

packages/core/installer/images/cozystack.json

@@ -1,4 +1,10 @@
 {
-  "containerimage.config.digest": "sha256:6d54a5b971e80fbaace664054d4e67f24fd1fbb7807ebaffd036d4ea7195df10",
-  "containerimage.digest": "sha256:a6b167235d8556ff7e45f4582c2491a2ad48292a46005dcf767908e2fb78e74e"
+  "buildx.build.ref": "youthful_hertz/youthful_hertz0/aafwjh8j28i98f59smgh3qe86",
+  "containerimage.descriptor": {
+    "mediaType": "application/vnd.docker.distribution.manifest.list.v2+json",
+    "digest": "sha256:e0c0defb9f5b10f5187d4002ccec7d01841e96c7350963f253003c0efeff6cef",
+    "size": 685
+  },
+  "containerimage.digest": "sha256:e0c0defb9f5b10f5187d4002ccec7d01841e96c7350963f253003c0efeff6cef",
+  "image.name": "ghcr.io/aenix-io/cozystack/cozystack:latest"
 }

packages/core/installer/images/cozystack.tag

@@ -1 +1 @@
-ghcr.io/aenix-io/cozystack/cozystack:v0.7.0
+ghcr.io/aenix-io/cozystack/cozystack:latest

packages/core/installer/images/cozystack/Dockerfile

@@ -3,12 +3,15 @@ FROM golang:alpine3.19 as k8s-await-election-builder
 ARG K8S_AWAIT_ELECTION_GITREPO=https://github.com/LINBIT/k8s-await-election
 ARG K8S_AWAIT_ELECTION_VERSION=0.4.1
 
+# TARGETARCH is a docker special variable: https://docs.docker.com/engine/reference/builder/#automatic-platform-args-in-the-global-scope
+ARG TARGETARCH
+
 RUN apk add --no-cache git make
 RUN git clone ${K8S_AWAIT_ELECTION_GITREPO} /usr/local/go/k8s-await-election/ \
  && cd /usr/local/go/k8s-await-election \
  && git reset --hard v${K8S_AWAIT_ELECTION_VERSION} \
  && make \
- && mv ./out/k8s-await-election-amd64 /k8s-await-election
+ && mv ./out/k8s-await-election-${TARGETARCH} /k8s-await-election
 
 FROM alpine:3.19 AS builder