diff --git a/network-poc/tests/Dockerfile.pytest b/network-poc/tests/Dockerfile.pytest
new file mode 100644
index 0000000..c60a05f
--- /dev/null
+++ b/network-poc/tests/Dockerfile.pytest
@@ -0,0 +1,5 @@
+FROM python:3.14-slim
+COPY --from=ghcr.io/astral-sh/uv:latest /uv /usr/local/bin/uv
+WORKDIR /work
+ENV PYTHONPATH=/work
+ENTRYPOINT ["sh", "-c", "uv init --no-readme --python '>=3.14' 2>/dev/null && rm -f hello.py main.py && uv add fastapi 'uvicorn[standard]' sqlalchemy pytest httpx 2>/dev/null && cp /src/*.py . && rm -f app.db test.db && uv run pytest test_main.py -v --tb=short 2>&1"]
diff --git a/network-poc/tests/model-benchmark.mjs b/network-poc/tests/model-benchmark.mjs
index 7595828..18f0c58 100644
--- a/network-poc/tests/model-benchmark.mjs
+++ b/network-poc/tests/model-benchmark.mjs
@@ -335,20 +335,18 @@ async function runPipeline(model, scenario) {
         result.validationIssues = issues.length;
         result.fixRounds = fixRound;
 
-        // 5. Projektin alustus (uv init) + kirjoita tiedostot + pytest
-        console.log(`    [5/5] Pytest...`);
-        try {
-            const uvPath = process.env.HOME + '/.local/bin/uv';
-            const uv = existsSync(uvPath) ? uvPath : 'uv';
-            execSync(`cd "${dir}" && ${uv} init --no-readme --python ">=3.14" 2>/dev/null && rm -f hello.py main.py`, { timeout: 30000, stdio: 'pipe' });
-            execSync(`cd "${dir}" && ${uv} add fastapi "uvicorn[standard]" sqlalchemy pytest httpx 2>/dev/null`, { timeout: 60000, stdio: 'pipe' });
+        // Kirjoita LLM:n generoimat Python-tiedostot
+        for (const [fn, content] of Object.entries(files)) {
+            if (fn.endsWith('.py')) writeFileSync(`${dir}/${fn}`, content);
+        }
 
-            // Kirjoita LLM:n generoimat Python-tiedostot (uv initin jälkeen)
-            for (const [fn, content] of Object.entries(files)) {
-                if (fn.endsWith('.py')) writeFileSync(`${dir}/${fn}`, content);
-            }
-            execSync(`cd "${dir}" && rm -f app.db test.db`, { stdio: 'pipe' });
-            const pytestOut = execSync(`cd "${dir}" && ${uv} run pytest test_main.py -v --tb=short 2>&1`, { timeout: 60000, encoding: 'utf-8' });
+        // 5. Pytest Docker-kontissa (kipina-pytest image)
+        console.log(`    [5/5] Pytest (Docker)...`);
+        try {
+            const pytestOut = execSync(
+                `docker run --rm -v "${dir}:/src:ro" kipina-pytest 2>&1`,
+                { timeout: 120000, encoding: 'utf-8' }
+            );
             writeFileSync(`${dir}/_pytest.txt`, pytestOut);
 
             const passedMatch = pytestOut.match(/(\d+) passed/);