Install curl.

Dockerfile

@@ -56,6 +56,10 @@ RUN cp -a build /build/
 #
 FROM mcr.microsoft.com/dotnet/core/aspnet:3.0-buster-slim
 
+# add libuv & curl
+RUN apk update \
+ && apk add --no-cache curl \
+
 # Default AspNetCore directory
 WORKDIR /app
 
@@ -66,4 +70,4 @@ COPY --from=frontend /build/ wwwroot/build/
 EXPOSE 80
 EXPOSE 11111
 
-ENTRYPOINT ["dotnet", "Squidex.dll"]
+ENTRYPOINT ["dotnet", "Squidex.dll"]