diff --git a/.github/workflows/verify.yml b/.github/workflows/verify.yml
index 1ed9104..720a234 100644
--- a/.github/workflows/verify.yml
+++ b/.github/workflows/verify.yml
@@ -9,7 +9,7 @@ on:
 jobs:
   verify:
     runs-on: ubuntu-latest
-    container: gcc:15
+    container: sfja/h5-mst-ci-backend
 
     steps:
     - uses: actions/checkout@v4
diff --git a/backend/ci-container/Dockerfile b/backend/ci-container/Dockerfile
new file mode 100644
index 0000000..0c6cbd5
--- /dev/null
+++ b/backend/ci-container/Dockerfile
@@ -0,0 +1,3 @@
+FROM alpine:3.14
+RUN apk add gcc llvm
+
diff --git a/backend/ci-container/publish.sh b/backend/ci-container/publish.sh
new file mode 100755
index 0000000..dd95611
--- /dev/null
+++ b/backend/ci-container/publish.sh
@@ -0,0 +1,10 @@
+#!/bin/bash
+
+tag=sfja/h5-mst-ci-backend
+
+set -xe
+
+docker build -t $tag .
+
+docker push $tag
+