As a test: build for both arm and amd 64bit

.drone.yml

@@ -29,11 +29,15 @@ get:
 ---
 kind: pipeline
 type: kubernetes
-name: build:latest
+name: build:latest-amd64
+
+platform:
+  os: linux
+  arch: amd64
+
 steps:
   - name: docker release
     image: registry.odit.services/library/drone-kaniko
-    user: 0
     settings:
       username:
         from_secret: docker_username
@@ -41,7 +45,7 @@ steps:
         from_secret: docker_password
       repo: library/drone-kaniko
       tags:
-        - latest
+        - latest-amd64
       registry: registry.odit.services
   - name: sign_image
     image: registry.odit.services/hub/library/alpine:edge
@@ -49,7 +53,50 @@ steps:
       - apk add cosign docker
       - echo $COSIGN_KEY | sed 's/<br>/\n/g' > cosign.key
       - echo $DOCKER_PASSWORD | docker login registry.odit.services -u $DOCKER_USERNAME --password-stdin
-      - "cosign sign --key cosign.key registry.odit.services/library/drone-kaniko:latest"
+      - "cosign sign --key cosign.key registry.odit.services/library/drone-kaniko:latest-amd64"
+    environment:
+      COSIGN_KEY:
+        from_secret: cosign_key
+      COSIGN_PASSWORD:
+        from_secret: cosign_password
+      DOCKER_PASSWORD:
+        from_secret: docker_password
+      DOCKER_USERNAME:
+        from_secret: docker_username
+trigger:
+  branch:
+    - main
+  event:
+    - push
+
+---
+kind: pipeline
+type: kubernetes
+name: build:latest-arm64
+
+platform:
+  os: linux
+  arch: arm64
+
+steps:
+  - name: docker release
+    image: registry.odit.services/library/drone-kaniko
+    settings:
+      username:
+        from_secret: docker_username
+      password:
+        from_secret: docker_password
+      repo: library/drone-kaniko
+      tags:
+        - latest-arm64
+      registry: registry.odit.services
+  - name: sign_image
+    image: registry.odit.services/hub/library/alpine:edge
+    commands:
+      - apk add cosign docker
+      - echo $COSIGN_KEY | sed 's/<br>/\n/g' > cosign.key
+      - echo $DOCKER_PASSWORD | docker login registry.odit.services -u $DOCKER_USERNAME --password-stdin
+      - "cosign sign --key cosign.key registry.odit.services/library/drone-kaniko:latest-arm64"
     environment:
       COSIGN_KEY:
         from_secret: cosign_key

Dockerfile

@@ -4,7 +4,7 @@ RUN apk add dos2unix --no-cache --update && rm -rf /var/cache/apk/*
 COPY plugin.sh ./
 RUN dos2unix plugin.sh
 
-FROM gcr.io/kaniko-project/executor:v1.8.1-debug
+FROM gcr.io/kaniko-project/executor:v1.12.1-debug
 
 ENV HOME /root
 ENV USER root