feat: add alpine 3.21, build on AX42

.woodpecker/build.yaml

@@ -12,7 +12,7 @@ matrix:
       PLATFORM_ID: el9
       ARCH: amd64
       ARCH_ID: x86_64
-      INSTANCE_TYPE: cpx41
+      INSTANCE_TYPE: AX42
     - PLATFORM: centos-8
       PLATFORM_ID: el8
       ARCH: arm64
@@ -22,7 +22,7 @@ matrix:
       PLATFORM_ID: el8
       ARCH: amd64
       ARCH_ID: x86_64
-      INSTANCE_TYPE: cpx41
+      INSTANCE_TYPE: AX42
     - PLATFORM: ubuntu-2204
       PLATFORM_ID: 2204
       ARCH: arm64
@@ -32,7 +32,7 @@ matrix:
       PLATFORM_ID: 2204
       ARCH: amd64
       ARCH_ID: amd64
-      INSTANCE_TYPE: cpx41
+      INSTANCE_TYPE: AX42
     - PLATFORM: ubuntu-2404
       PLATFORM_ID: 2404
       ARCH: arm64
@@ -42,7 +42,7 @@ matrix:
       PLATFORM_ID: 2404
       ARCH: amd64
       ARCH_ID: amd64
-      INSTANCE_TYPE: cpx41
+      INSTANCE_TYPE: AX42
     # - PLATFORM: opensuse-155
     #   PLATFORM_ID: suse155
     #   ARCH: arm64
@@ -55,7 +55,17 @@ matrix:
       PLATFORM_ID: alpine320
       ARCH: amd64
       ARCH_ID: x86_64
-      INSTANCE_TYPE: cpx41
+      INSTANCE_TYPE: AX42
+    - PLATFORM: alpine-321
+      PLATFORM_ID: alpine321
+      ARCH: arm64
+      ARCH_ID: aarch64
+      INSTANCE_TYPE: cax31
+    - PLATFORM: alpine-321
+      PLATFORM_ID: alpine321
+      ARCH: amd64
+      ARCH_ID: x86_64
+      INSTANCE_TYPE: AX42
 
 steps:
   # Ensures that we're always using the latest available upstream build chain
@@ -210,7 +220,7 @@ services:
     image: docker:27-dind
     commands:
       - mkdir -p /tmp/${PLATFORM}/${ARCH}
-      - dockerd --tls=false --host=tcp://0.0.0.0:2375
+      - dockerd --tls=false --mtu 1420 --host=tcp://0.0.0.0:2375
     privileged: true
     ports:
       - 2375