diff --git a/.gitea/workflows/tests.yml b/.gitea/workflows/tests.yml
index ff0ec97..6811d1a 100644
--- a/.gitea/workflows/tests.yml
+++ b/.gitea/workflows/tests.yml
@@ -9,14 +9,13 @@ on:
 jobs:
   setup:
     name: Setup and Checkout
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-latest:docker://ubuntu:22.04
 
     steps:
       - name: Runner Info
         run: |
           echo "=== Setup Job - $(date) ==="
-          echo "Runner: ${GITEA_RUNNER_NAME:-$(hostname)} | User: $(whoami) | OS: $(uname -s)"
-          echo "Resources: $(nproc) cores, $(free -h | awk '/^Mem:/ {print $2}') RAM"
+          echo "Runner: ${GITEA_RUNNER_NAME:-$(hostname)}"
 
       - name: Checkout code
         uses: actions/checkout@v4
@@ -73,7 +72,7 @@ jobs:
 
   backend-setup:
     name: Backend Setup (Python 3.13 + uv + Environment)
-    runs-on: ubuntu-latest
+    runs-on: python-latest:docker://python:3.13-slim
     needs: setup
 
     steps:
@@ -141,7 +140,7 @@ jobs:
 
   frontend-setup:
     name: Frontend Setup (Node.js 24 + Yarn Berry + Build)
-    runs-on: ubuntu-latest
+    runs-on: node-latest:docker://node:20-bookworm-slim
     needs: setup
 
     steps:
@@ -225,7 +224,7 @@ jobs:
 
   backend-tests:
     name: Backend Tests (Python 3.13 + uv)
-    runs-on: ubuntu-latest
+    runs-on: python-latest:docker://python:3.13-slim
     needs: backend-setup
 
     steps:
@@ -269,7 +268,7 @@ jobs:
 
   frontend-tests:
     name: Frontend Tests (TypeScript + Vue + Yarn Berry)
-    runs-on: ubuntu-latest
+    runs-on: node-latest:docker://node:20-bookworm-slim
     needs: frontend-setup
 
     steps: