.github/workflows/container-image.yml

@@ -10,16 +10,16 @@ on:
 
 jobs:
   docker-build:
-    runs-on: ubuntu-20.04
+    runs-on: ubuntu-24.04
     steps:
-    - uses: docker/setup-qemu-action@v3.2.0
-    - uses: docker/setup-buildx-action@v3.7.1
+    - uses: docker/setup-qemu-action@v3.6.0
+    - uses: docker/setup-buildx-action@v3.10.0
     # > By default, this action uses the Git context so you don't need to use
     # > the actions/checkout action to checkout the repository because this
     # > will be done directly by buildkit. [...]
     # > any file mutation in the steps that precede [...] will be ignored
     # https://github.com/marketplace/actions/build-and-push-docker-images
-    - uses: docker/build-push-action@v6.10.0
+    - uses: docker/build-push-action@v6.15.0
       with:
         platforms: |
           linux/amd64

Dockerfile

@@ -1,4 +1,4 @@
-FROM docker.io/alpine:3.21.0
+FROM docker.io/alpine:3.21.3
 
 # https://dovecot.org/doc/NEWS
 # https://git.alpinelinux.org/aports/log/main/dovecot?h=3.21-stable