set platform label

.woodpecker/build.yaml

@@ -1,3 +1,6 @@
+labels:
+  platform: linux/arm64
+
 when:
   event: [push, cron]
 
@@ -57,7 +60,7 @@ steps:
       DOCKER_HOST: tcp://docker:2375
     commands: |
       docker info
-      docker buildx create --name mybuilder --use
+      # docker buildx create --name mybuilder --use
       if [ ! -s r_build_latest.txt ] || [ ! "$(cat r-release-version.txt)" = "$(cat r_build_latest.txt)" ]; then
         apk add -q --no-cache py3-pip make just aws-cli docker-compose
         pip3 install -q b2 --break-system-packages

builder/docker-compose.yml

@@ -102,8 +102,6 @@ services:
       - R_INSTALL_PATH=${R_INSTALL_PATH}
       - LOCAL_STORE=/tmp/output
     build:
-      platforms:
-        - "linux/arm64"
       context: .
       dockerfile: Dockerfile.rhel-9
     image: r-builds:rhel-9