chore(docker): add test compose fixtures

example-http-one/Dockerfile

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+FROM python:3.14-slim
+
+WORKDIR /srv/www
+
+COPY index.html ./
+
+EXPOSE 8080
+
+CMD ["python", "-m", "http.server", "8080", "--bind", "0.0.0.0", "--directory", "/srv/www"]

example-http-one/docker-compose.yml

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+services:
+  web:
+    build: .
+    container_name: example-http-one
+    ports:
+      - "18081:8080"

example-http-one/index.html

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+<!doctype html>
+<html lang="en">
+  <head>
+    <meta charset="utf-8">
+    <title>Example HTTP One</title>
+  </head>
+  <body>
+    <h1>Example HTTP One</h1>
+    <p>This container serves a static page with Python's http.server.</p>
+  </body>
+</html>