diff --git a/.github/actions/build-assetbundle/Dockerfile b/.github/actions/build-assetbundle/Dockerfile
new file mode 100644
index 0000000..a9465a0
--- /dev/null
+++ b/.github/actions/build-assetbundle/Dockerfile
@@ -0,0 +1 @@
+FROM unityci/editor:ubuntu-2019.4.18f1-windows-mono-3
\ No newline at end of file
diff --git a/.github/actions/build-assetbundle/action.yml b/.github/actions/build-assetbundle/action.yml
new file mode 100644
index 0000000..6beaaeb
--- /dev/null
+++ b/.github/actions/build-assetbundle/action.yml
@@ -0,0 +1,7 @@
+name: Build Assetbundle
+description: Build an assetbundle
+
+runs:
+  using: docker
+  image: Dockerfile
+
diff --git a/.github/actions/setup-unity/action.yml b/.github/actions/setup-unity/action.yml
deleted file mode 100644
index c688de0..0000000
--- a/.github/actions/setup-unity/action.yml
+++ /dev/null
@@ -1,34 +0,0 @@
-name: Setup Unity
-description: Installs the Unity Editor
-
-inputs:
-  editor-version:
-    description: >
-      CKAN tag to install. set to an empty string to always install the most recent version. 
-      See https://github.com/KSP-CKAN/CKAN/tags for a list of available tags
-    default: ''
-
-runs:
-  using: composite
-  steps:
-    - name: Install Unity public key
-      shell: bash
-      run: >-
-        wget -qO - https://hub.unity3d.com/linux/keys/public 
-        | gpg --dearmor 
-        | sudo tee /usr/share/keyrings/Unity_Technologies_ApS.gpg > /dev/null
-
-    - name: Install Unity apt package
-      shell: bash
-      run: |
-        sudo sh -c 'echo "deb [signed-by=/usr/share/keyrings/Unity_Technologies_ApS.gpg] https://hub.unity3d.com/linux/repos/deb stable main" > /etc/apt/sources.list.d/unityhub.list'
-        sudo apt update
-
-    - name: Install Unity hub
-      uses: tecolicom/actions-use-apt-tools@v1
-      with:
-        tools: 'unityhub'
-
-    - name: Run Unity Hub
-      shell: bash
-      run: unityhub --headless help
diff --git a/.github/workflows/internal-test-assetbundle.yml b/.github/workflows/internal-test-assetbundle.yml
index cfaee71..e7603a6 100644
--- a/.github/workflows/internal-test-assetbundle.yml
+++ b/.github/workflows/internal-test-assetbundle.yml
@@ -13,4 +13,4 @@ jobs:
     steps:
       - uses: actions/checkout@v4
 
-      - uses: ./.github/actions/setup-unity
\ No newline at end of file
+      - uses: ./.github/actions/build-assetbundle
\ No newline at end of file