add docker example

examples/prefect-deploy.Dockerfile

@@ -1,10 +1,13 @@
 FROM ghcr.io/astral-sh/uv:python3.12-bookworm-slim
 
+RUN apt-get update && apt-get install -y git
+
+RUN rm -rf /var/lib/apt/lists/*
+
 WORKDIR /app
 
 ENV UV_SYSTEM_PYTHON=1
 ENV PATH="/root/.local/bin:$PATH"
 
-RUN --mount=type=cache,target=/root/.cache/uv \
-    uv pip install controlflow
+RUN uv pip install controlflow
 

examples/prefect_deploy.py

@@ -1,7 +1,9 @@
+import os
 import sys
 from pathlib import Path
 
 from prefect.docker import DockerImage
+from prefect.runner.storage import GitRepository
 
 import controlflow as cf
 
@@ -26,8 +28,12 @@ def write_poems(topics: list[str]) -> list[str]:
             entrypoint=f"{p.name}:write_poem",
         ).deploy(name="local-deployment", work_pool_name="local-process-pool")
     elif len(sys.argv) > 1 and sys.argv[1] == "docker_deploy":
+        repo = GitRepository(
+            url="https://github.com/PrefectHQ/controlflow.git",
+            branch="example-deploy",
+        )
         write_poems.from_source(
-            source="https://github.com/PrefectHQ/controlflow.git@example-deploy",
+            source=repo,
             entrypoint="examples/prefect_deploy.py:write_poems",
         ).deploy(
             name="docker-deployment",
@@ -38,7 +44,9 @@ def write_poems(topics: list[str]) -> list[str]:
                     Path(__file__).parent.resolve() / "prefect-deploy.Dockerfile"
                 ),
             ),
-            work_pool_name="docker-pool",
+            work_pool_name="docker-work",
+            parameters={"topics": ["roses", "violets", "sugar", "spice"]},
+            job_variables={"env": {"OPENAI_API_KEY": os.getenv("OPENAI_API_KEY")}},
         )
     else:
         print(f"just running the code\n\n\n\n\n\n")