Update Dockerfile

Dockerfile

@@ -14,7 +14,7 @@ WORKDIR /app
 RUN --mount=type=secret,id=ZIP_PASSWD,mode=0444,required=true \
     version=$(basename $(curl -sL -o /dev/null -w %{url_effective} https://github.com/wozulong/Palaude/releases/latest)) \
     && base_url="https://github.com/wozulong/Palaude/releases/expanded_assets/$version" \
-    && latest_url="https://github.com/$(curl -sL $base_url | grep "href.*linux-amd64*\.zip" | sed 's/.*href="//' | sed 's/".*//')" \
+    && latest_url=https://github.com/$(curl -sL $base_url | grep "href.*linux-amd64*\.zip" | sed 's/.*href="//' | sed 's/".*//') \
     && curl -Lo palaude.zip $latest_url \
     && 7z e -p$(cat /run/secrets/ZIP_PASSWD) palaude.zip \
     && rm palaude.zip \