diff --git a/.gitea/workflows/ci.yml b/.gitea/workflows/ci.yml
index 7742416..e277f53 100644
--- a/.gitea/workflows/ci.yml
+++ b/.gitea/workflows/ci.yml
@@ -113,17 +113,15 @@ jobs:
           push: false
 
   eslint:
-    runs-on: ubuntu-latest
+    runs-on: docker
+    container:
+      image: git.kjan.de/actions/runner-bun:latest
     name: eslint
     needs: changed_files
     if: ${{ needs.changed_files.outputs.frontend == 'true' || needs.changed_files.outputs.workflow == 'true' }}
-    container:
-      image: catthehacker/ubuntu:act-latest
     steps:
       - name: Checkout Code
         uses: actions/checkout@v4
-      - name: Install bun
-        uses: oven-sh/setup-bun@v2
       - uses: actions/cache@v4
         working-directory: ./frontend
         with:
@@ -142,17 +140,15 @@ jobs:
           bun run lint
 
   oxlint:
-    runs-on: ubuntu-latest
+    runs-on: docker
     name: oxlint
     needs: changed_files
     if: ${{ needs.changed_files.outputs.frontend == 'true' || needs.changed_files.outputs.workflow == 'true' }}
     container:
-      image: catthehacker/ubuntu:act-latest
+      image: git.kjan.de/actions/runner-bun:latest
     steps:
       - name: Checkout Code
         uses: actions/checkout@v4
-      - name: Install bun
-        uses: oven-sh/setup-bun@v2
       - uses: actions/cache@v4
         working-directory: ./frontend
         with:
@@ -171,17 +167,15 @@ jobs:
           bun run oxlint
 
   prettier:
-    runs-on: ubuntu-latest
+    runs-on: docker
     name: prettier
     needs: changed_files
     if: ${{ needs.changed_files.outputs.frontend == 'true' || needs.changed_files.outputs.workflow == 'true' }}
     container:
-      image: catthehacker/ubuntu:act-latest
+      image: git.kjan.de/actions/runner-bun:latest
     steps:
       - name: Checkout Code
         uses: actions/checkout@v4
-      - name: Install bun
-        uses: oven-sh/setup-bun@v2
       - uses: actions/cache@v4
         working-directory: ./frontend
         with:
@@ -200,17 +194,15 @@ jobs:
           bun run format:check
 
   test-build:
-    runs-on: ubuntu-latest
+    runs-on: docker
     name: test-build
     needs: changed_files
     if: ${{ needs.changed_files.outputs.frontend == 'true' || needs.changed_files.outputs.workflow == 'true' }}
     container:
-      image: catthehacker/ubuntu:act-latest
+      image: git.kjan.de/actions/runner-bun:latest
     steps:
       - name: Checkout Code
         uses: actions/checkout@v4
-      - name: Install bun
-        uses: oven-sh/setup-bun@v2
       - uses: actions/cache@v4
         working-directory: ./frontend
         with:
diff --git a/backend/src/main/java/de/szut/casino/coinflip/CoinflipResult.java b/backend/src/main/java/de/szut/casino/coinflip/CoinflipResult.java
index 71ead05..4c8fbdf 100644
--- a/backend/src/main/java/de/szut/casino/coinflip/CoinflipResult.java
+++ b/backend/src/main/java/de/szut/casino/coinflip/CoinflipResult.java
@@ -12,4 +12,5 @@ import java.math.BigDecimal;
 public class CoinflipResult {
     private boolean isWin;
     private BigDecimal payout;
+    private CoinSide coinSide;
 }
diff --git a/backend/src/main/java/de/szut/casino/coinflip/CoinflipService.java b/backend/src/main/java/de/szut/casino/coinflip/CoinflipService.java
index 4cdc3e1..c706ffa 100644
--- a/backend/src/main/java/de/szut/casino/coinflip/CoinflipService.java
+++ b/backend/src/main/java/de/szut/casino/coinflip/CoinflipService.java
@@ -19,8 +19,8 @@ public class CoinflipService {
     public CoinflipResult play(UserEntity user, CoinflipDto coinflipDto) {
         this.balanceService.subtractFunds(user, coinflipDto.getBetAmount());
 
-        CoinflipResult coinflipResult = new CoinflipResult(false, BigDecimal.ZERO);
         CoinSide coinSide = this.random.nextBoolean() ? CoinSide.HEAD : CoinSide.TAILS;
+        CoinflipResult coinflipResult = new CoinflipResult(false, BigDecimal.ZERO, coinSide);
         if (coinSide == coinflipDto.getCoinSide()) {
             coinflipResult.setWin(true);