diff --git a/Dockerfile.dev b/Dockerfile.dev
index 46ee29a..7686f6a 100644
--- a/Dockerfile.dev
+++ b/Dockerfile.dev
@@ -1,12 +1,11 @@
-FROM mcr.microsoft.com/dotnet/core/sdk:3.1 as build-env
+FROM mcr.microsoft.com/dotnet/sdk:5.0 as build-env
 WORKDIR /source
-COPY Packages/. Packages/.
 COPY . .
-RUN dotnet restore -s /source/Packages -s https://api.nuget.org/v3/index.json
+RUN dotnet restore --configfile nuget.config
 RUN dotnet build
 RUN dotnet publish -o /publish --configuration Release;
 
-FROM mcr.microsoft.com/dotnet/aspnet:3.1
+FROM mcr.microsoft.com/dotnet/sdk:5.0
 COPY . .
 RUN DEBIAN_FRONTEND=noninteractive apt-get update && apt-get install -y --no-install-recommends apt-utils
 RUN DEBIAN_FRONTEND=noninteractive apt-get install -y fontconfig