Update .gitignore, remove obsolete Woodpecker build file, and add e2e-runner service to docker-compose

- Added 'e2e/results/' to .gitignore to exclude end-to-end test results.
- Deleted the outdated Woodpecker build-arm.yml file as it is no longer needed.
- Introduced a new e2e-runner service in docker-compose.test.yml to facilitate end-to-end testing with dependencies on other services.

e2e/Dockerfile

@@ -0,0 +1,16 @@
+FROM docker:24
+
+RUN apk add --no-cache python3 py3-pip bash
+
+WORKDIR /e2e
+
+COPY requirements.txt ./
+RUN python3 -m venv /opt/venv \
+    && /opt/venv/bin/pip install --no-cache-dir --upgrade pip \
+    && /opt/venv/bin/pip install --no-cache-dir -r requirements.txt pytest-csv
+
+ENV PATH=/opt/venv/bin:$PATH
+
+COPY . /e2e
+
+CMD ["pytest", "--csv=/results/report.csv", "-v"]