bump all test cases and example alpine:3.19 to alpine:3.21

Signed-off-by: Avi Deitcher <avi@deitcher.net>

examples/volumes.yml

@@ -39,7 +39,7 @@ services:
 volumes:
 - name: blank   # blank volume
 - name: alpine  # populated volume
-  image: alpine:3.19
+  image: alpine:3.21
 files:
   - path: etc/linuxkit-config
     metadata: yaml

test/cases/000_build/055_dockerfiles/000_missing_in_yml/Dockerfile

@@ -1 +1 @@
-FROM alpine:3.19
+FROM alpine:3.21

test/cases/000_build/055_dockerfiles/001_missing_in_yml_found_cli/Dockerfile

@@ -1 +1 @@
-FROM alpine:3.19
+FROM alpine:3.21

test/cases/000_build/055_dockerfiles/002_found_in_yml_missing_cli/Dockerfile

@@ -1 +1 @@
-FROM alpine:3.19
+FROM alpine:3.21

test/cases/000_build/055_dockerfiles/003_default/Dockerfile

@@ -1 +1 @@
-FROM alpine:3.19
+FROM alpine:3.21

test/cases/000_build/056_build_args/000_build_arg_yaml/build.yml

@@ -1,4 +1,4 @@
 org: linuxkit
 image: image-in-build-args
 buildArgs:
-- IMAGE=alpine:3.19
+- IMAGE=alpine:3.21

test/cases/000_build/056_build_args/001_build_arg_cli/build-args

@@ -1 +1 @@
-IMAGE=alpine:3.19
+IMAGE=alpine:3.21

test/cases/000_build/056_build_args/002_build_arg_cli_over_yaml/build-args

@@ -1 +1 @@
-IMAGE=alpine:3.19
+IMAGE=alpine:3.21

test/cases/000_build/070_volumes/005_image/test.yml

@@ -16,7 +16,7 @@ onboot:
     command: ["/bin/sh", "/poweroff.sh", "10"]
 volumes:
   - name: vola
-    image: alpine:3.19
+    image: alpine:3.21
 files:
   - path: check.sh
     source: ./check.sh

test/cases/000_build/070_volumes/006_mount_types/test.yml

@@ -31,7 +31,7 @@ onboot:
     command: ["/bin/sh", "/poweroff.sh", "10"]
 volumes:
   - name: vola
-    image: alpine:3.19
+    image: alpine:3.21
 files:
   - path: check.sh
     source: ./check.sh

test/cases/040_packages/005_extend/002_xfs/test-create.yml

@@ -12,7 +12,7 @@ onboot:
     image: linuxkit/mount:cb8caa72248f7082fc2074ce843d53cdc15df04a
     command: ["/usr/bin/mountie", "/var/lib/docker"]
   - name: test
-    image: alpine:3.19
+    image: alpine:3.21
     binds:
       - /var/lib/docker:/var/lib/docker
     command: ["touch", "/var/lib/docker/bar"]

test/cases/040_packages/006_format_mount/004_xfs/test.yml

@@ -12,7 +12,7 @@ onboot:
     image: linuxkit/mount:cb8caa72248f7082fc2074ce843d53cdc15df04a
     command: ["/usr/bin/mountie", "/var/lib/docker"]
   - name: test
-    image: alpine:3.19
+    image: alpine:3.21
     binds:
       - /var/lib/docker:/var/lib/docker
       - /check.sh:/check.sh