diff --git a/.gitea/workflows/ci.yaml b/.gitea/workflows/ci.yaml
index eecd7ce..bddb96a 100644
--- a/.gitea/workflows/ci.yaml
+++ b/.gitea/workflows/ci.yaml
@@ -5,15 +5,11 @@ on: [push, pull_request]
 jobs:
   build-and-test:
     runs-on: ubuntu-latest
+    container: gitea.tap-tap.win/taptap/fastsync-ci:latest
     steps:
       - name: Checkout
         uses: actions/checkout@v4
 
-      - name: Install dependencies
-        run: |
-          sudo apt-get update
-          sudo apt-get install -y --no-install-recommends gcc cmake libzstd-dev
-
       - name: Configure
         run: cmake -B build -S .
 
diff --git a/Dockerfile b/Dockerfile
new file mode 100644
index 0000000..9d32c97
--- /dev/null
+++ b/Dockerfile
@@ -0,0 +1,4 @@
+FROM ubuntu:24.04
+RUN apt-get update && apt-get install -y --no-install-recommends \
+    gcc cmake libzstd-dev git ca-certificates && \
+    rm -rf /var/lib/apt/lists/*