Chore(docker): re-tag to dev

.github/workflows/docker.yml

@@ -47,7 +47,7 @@ jobs:
         run: |
           echo ::set-output name=version::$(git describe --tags --abbrev=0)
 
-      - name: Build and Push (nightly)
+      - name: Build and Push (dev)
         if: github.ref == 'refs/heads/main'
         uses: docker/build-push-action@v2
         with:
@@ -55,8 +55,8 @@ jobs:
           push: true
           platforms: linux/amd64,linux/arm/v7,linux/arm64
           tags: |
-            xjasonlyu/tun2socks:nightly
+            xjasonlyu/tun2socks:dev
-            ghcr.io/xjasonlyu/tun2socks:nightly
+            ghcr.io/xjasonlyu/tun2socks:dev
 
       - name: Build and Push (latest)
         if: startsWith(github.ref, 'refs/tags/')