here goes nothing

.github/actions/build-assetbundle/Dockerfile → .github/actions/build-assetbundles/Dockerfile

@@ -3,8 +3,11 @@ ARG UNITY_VERSION=2019.4.18f1
 # Source from UnityCI's prebuild unity editor containers
 FROM unityci/editor:${UNITY_VERSION}-windows-mono-3
 
+RUN apt update
+RUN apt install -y dotnet-sdk-8.0
+
 #Copy entire KSPBuildTools repo into container
 COPY ./ /KSPBuildTools
 
 # Code file to execute when the docker container starts up (`build-assetbundle.sh`)
-ENTRYPOINT ["/KSPBuildTools/build-assetbundle.sh", "--editor", "unity-editor"]
+ENTRYPOINT ["bash"]

.github/actions/build-assetbundles/action.yml

@@ -0,0 +1,55 @@
+name: Build Assetbundle
+description: Build an assetbundle
+
+inputs: 
+  unity-version:
+    description: Full unity version name to build with. e.g. 2019.4.18f1
+    default: '2019.4.18f1'
+
+  project-dir:
+    description: Location of the Unity project root (The folder that contains `Assets`) *relative to the github workspace*
+    default: .
+
+  assetbundle-dir:
+    description: Destination for built assetbundles
+
+runs:
+  using: composite
+  steps:
+    - name: Build Docker Container
+      shell: bash
+      run: |
+        docker build --platform linux/amd64 --tag build-assetbundle --file ${{ github.action_path }}/Dockerfile --build-arg UNITY_VERSION=${{inputs.unity-version}} .
+      working-directory: ${{ github.action_path }}/../../..
+
+    - name: Start Docker Container
+      shell: bash
+      run: >
+        docker run --name build-assetbundle 
+        -d -i -t 
+        --volume ${{ github.workspace }}:/github/workspace 
+        build-assetbundle 
+
+    - name: Copy editor tools into project
+      shell: bash
+      run: |
+        mkdir /github/workspace/${{ inputs.project-dir }}/Assets/KSPBuildTools
+        docker exec -d build-assetbundle cp /KSPBuildTools/Editor /github/workspace/${{ inputs.project-dir }}/Editor
+
+    - name: Run assetbundle build
+      shell: bash
+      run: >
+        docker exec -d build-assetbundle 
+        unity-editor 
+          -batchmode 
+          -nographics 
+          -projectPath /github/workspace/${{ inputs.project-dir }} 
+          -executeMethod AssetBundleBuilder.BuildBundles
+          -assetbundlePath /github/workspace/${{ inputs.assetbundle-dir }}
+          -quit
+        
+    - name: Shutdown Docker Container
+      shell: bash
+      run: docker stop build-assetbundle
+
+

.github/workflows/internal-test-assetbundle.yml

@@ -13,4 +13,17 @@ jobs:
     steps:
       - uses: actions/checkout@v4
 
-      - uses: ./.github/actions/build-assetbundle
+      - uses: actions/checkout@v4
+        with:
+          repository: 'https://github.com/LGhassen/Deferred.git'
+          path: 'Deferred'
+
+      - uses: ./.github/actions/build-assetbundle
+        with:
+          project-dir: 'Deferred/shaders/DeferredKSPShaders'
+          assetbundle-dir: 'Bundle'
+
+      - uses: actions/upload-artifact@v4
+        with:
+          path: 'Bundle'
+          name: assetbundle

Editor/AssetBundleBuilder.cs

@@ -1,7 +1,21 @@
+using System;
 using UnityEditor;
 
-namespace KSPBuildTools.Editor {
-    public class AssetBundleBuilder {
+public class AssetBundleBuilder
+{
+    public static void BuildBundles()
+    {
+        string[] args = Environment.GetCommandLineArgs();
+        string path = "";
+        string target = "";
+        for (int i = 0; i < args.Length; i++)
+        {
+            if(args[i] == "-assetbundlePath")
+            {
+                path = args[i + 1];
+            }
+        }
 
+        BuildPipeline.BuildAssetBundles(path, BuildAssetBundleOptions.ChunkBasedCompression, BuildTarget.StandaloneWindows64);
     }
 }

KSPBuildTools.csproj

@@ -32,6 +32,7 @@
   </PropertyGroup>
 
   <ItemGroup>
+    <None Include=".github\actions\build-assetbundles\build-assetbundle.sh" />
     <None Include="KSPCommon.props" Pack="True" PackagePath="build/KSPBuildTools.props" />
     <None Include="KSPCommon.targets" Pack="True" PackagePath="build/KSPBuildTools.targets" />
     <None Include="README.md" Pack="True" PackagePath="/"/>