diff --git a/.github/workflows/ci.installer.yml b/.github/workflows/ci.installer.yml
index 52c22f7..a72482d 100644
--- a/.github/workflows/ci.installer.yml
+++ b/.github/workflows/ci.installer.yml
@@ -29,7 +29,7 @@ jobs:
   shellcheck:
       runs-on: ubuntu-latest
       steps:
-      - uses: actions/checkout@v4     
+      - uses: actions/checkout@v4
       - uses: reviewdog/action-shellcheck@v1
 
   usage-as-proxy:
@@ -167,6 +167,7 @@ jobs:
           - ubuntu:jammy
           - ubuntu:noble
           - fedora:latest
+          - alpine:latest
     container: ${{ matrix.container }}
     steps:
       - uses: actions/checkout@v4