diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -1,4 +1,3 @@
-image: mcr.microsoft.com/dotnet/sdk:3.1-focal
 
 stages:
   - build
@@ -7,6 +6,14 @@
   stage: build
   script:
     - dotnet build isometric-park-fna-core.sln -f netcoreapp3.1
+  image: mcr.microsoft.com/dotnet/sdk:3.1-focal
+
+
+build-release-windows:
+  stage: build
+  script:
+    - dotnet build isometric-park-fna-core.sln -f netcoreapp3.1 -c Release
+  image: mcr.microsoft.com/dotnet/sdk:3.1
 
 build-release:
   stage: build
@@ -14,6 +21,7 @@
     - dotnet build isometric-park-fna-core.sln -f netcoreapp3.1 -c Release
     - cp -r fnalibs/lib64 isometric-park-fna/bin/Release/
     - cd isometric-park-fna/bin/Release/netcoreapp3.1; ls "../../../../fnalibs/lib64"
+    - apt-get update
     - apt install -y xorg-dev libglu1-mesa libgl1-mesa-dev xvfb libxinerama1 libxcursor1
     - LD_LIBRARY_PATH="../../../../fnalibs/lib64" DYLD_LIBRARY_PATH="../../../../fnalibs/osx" xvfb-run -a -s "-screen 0 1400x900x24 +extension RANDR" --  dotnet ./isometric-park-fna.dll &
     - sleep 5; xwd -root -out screenshot.xwd
@@ -22,3 +30,4 @@
     paths:
       - screenshot.xwd
     expire_in: 1 week
+  image: mcr.microsoft.com/dotnet/sdk:3.1-focal