diff --git a/Jenkinsfile b/Jenkinsfile
index ab2a87b4..c16620cc 100644
--- a/Jenkinsfile
+++ b/Jenkinsfile
@@ -58,21 +58,26 @@ pipeline {
           DB_USER="anexo76"
           DB_PASS="anexo76"
           DB_PORT="55432"
-          export TEST_DATABASE_URL="postgresql://${DB_USER}:${DB_PASS}@127.0.0.1:${DB_PORT}/${DB_NAME}"
+          export TEST_DATABASE_URL="postgresql://${DB_USER}:${DB_PASS}@${DB_CONTAINER}:5432/${DB_NAME}"
           PY_CONTAINER="anexo76-test-py-${BUILD_NUMBER}"
+          TEST_NETWORK="anexo76-test-net-${BUILD_NUMBER}"
 
           cleanup() {
             docker rm -f "$PY_CONTAINER" >/dev/null 2>&1 || true
             docker rm -f "$DB_CONTAINER" >/dev/null 2>&1 || true
+            docker network rm "$TEST_NETWORK" >/dev/null 2>&1 || true
           }
           trap cleanup EXIT
 
+          docker network rm "$TEST_NETWORK" >/dev/null 2>&1 || true
+          docker network create "$TEST_NETWORK"
+
           docker rm -f "$DB_CONTAINER" >/dev/null 2>&1 || true
           docker run -d --name "$DB_CONTAINER" \
+            --network "$TEST_NETWORK" \
             -e POSTGRES_DB="$DB_NAME" \
             -e POSTGRES_USER="$DB_USER" \
             -e POSTGRES_PASSWORD="$DB_PASS" \
-            -p "${DB_PORT}:5432" \
             postgres:16-alpine
 
           # Espera a que Postgres acepte conexiones
@@ -84,40 +89,30 @@ pipeline {
           done
           docker exec "$DB_CONTAINER" pg_isready -U "$DB_USER" -d "$DB_NAME"
 
-          docker run --name "$PY_CONTAINER" --rm \
-            --network host \
+          docker rm -f "$PY_CONTAINER" >/dev/null 2>&1 || true
+          docker run -d --name "$PY_CONTAINER" --network "$TEST_NETWORK" python:3.12-slim sleep infinity
+          docker exec "$PY_CONTAINER" mkdir -p /workspace
+          docker cp "$WORKSPACE/." "$PY_CONTAINER:/workspace"
+
+          docker exec \
             -e TEST_DATABASE_URL="$TEST_DATABASE_URL" \
-            -v "$WORKSPACE:/workspace" \
-            -w /workspace \
-            python:3.12-slim \
+            "$PY_CONTAINER" \
             sh -lc '
               set -euxo pipefail
               python --version
               python -m pip install --upgrade pip
-              REPO_ROOT=""
-              for d in /workspace /workspace/*; do
-                if [ -d "$d/backend" ]; then
-                  REPO_ROOT="$d"
-                  break
-                fi
-              done
-              if [ -z "$REPO_ROOT" ]; then
-                echo "ERROR: Could not locate repository root containing backend/ directory"
-                ls -la /workspace || true
-                exit 1
-              fi
-              echo "Detected REPO_ROOT=$REPO_ROOT"
-              if [ -f "$REPO_ROOT/backend/requirements.txt" ]; then
-                pip install -r "$REPO_ROOT/backend/requirements.txt"
-              elif [ -f "$REPO_ROOT/backend/requirements/base.txt" ]; then
-                pip install -r "$REPO_ROOT/backend/requirements/base.txt"
+              if [ -f /workspace/backend/requirements.txt ]; then
+                pip install -r /workspace/backend/requirements.txt
+              elif [ -f /workspace/backend/requirements/base.txt ]; then
+                pip install -r /workspace/backend/requirements/base.txt
               else
-                echo "ERROR: No requirements file found in $REPO_ROOT/backend"
-                ls -la "$REPO_ROOT/backend" || true
-                ls -la "$REPO_ROOT/backend/requirements" || true
+                echo "ERROR: No requirements file found in /workspace/backend"
+                ls -la /workspace || true
+                ls -la /workspace/backend || true
+                ls -la /workspace/backend/requirements || true
                 exit 1
               fi
-              cd "$REPO_ROOT/backend"
+              cd /workspace/backend
               alembic upgrade head
               pytest -q tests -v -ra -s
             '