Add Docker

Author: zsxsoft

.github/workflows/0ctf2025-springduck.yaml

@@ -0,0 +1,31 @@
+name: springduck
+on:
+  push:
+    paths:
+      - ./0ctf2025
+      - .github/workflows/0ctf2025-springduck.yaml
+
+env:
+  REGISTRY: ghcr.io
+  IMAGE_NAME: ${{ github.repository }}
+
+jobs:
+  docker:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Login to GitHub Container Registry
+        uses: docker/login-action@v3
+        with:
+          registry: ghcr.io
+          username: ${{ github.actor }}
+          password: ${{ secrets.GITHUB_TOKEN }}
+      - name: Set up Docker Buildx
+        uses: docker/setup-buildx-action@v3
+      - name: Build and push
+        uses: docker/build-push-action@v6
+        with:
+          platforms: linux/amd64,linux/arm64
+          push: true
+          tags: ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}:0ctf2025-springduck
+          context: ./0ctf2025/springduck/challenge
+          file: .//0ctf2025/springduck/challenge/Dockerfile

0ctf2025/springduck/readme.md

@@ -1,3 +1,5 @@
 [中文](readme_cn.md)
 
-[English](readme_en.md)
+[English](readme_en.md)
+
+[Challenge Docker](https://github.com/zsxsoft/my-ctf-challenges/pkgs/container/fava-management)