simple-app/ ├── .python-version ├── readme.md ├── hello.py └── pyproject.toml 

[project] name = "simple-app" version = "0.1.0" description = "add your description here" readme = "readme.md" requires-python = ">=3.11" dependencies = [] 

dependencies = [     "fastapi[standard]<1.0.0,>=0.114.2",     "python-multipart<1.0.0,>=0.0.7",     "email-validator<3.0.0,>=2.1.0",     "pydantic>2.0",     "sqlalchemy>2.0",     "alembic<2.0.0,>=1.12.1",     ]  [tool.uv] dev-dependencies = [     "pytest<8.0.0,>=7.4.3",     "mypy<2.0.0,>=1.8.0",     "ruff<1.0.0,>=0.2.2",     "pre-commit<4.1.0,>=4.0.0", ] 

recipe-app/ ├── app/ │   ├── main.py │   ├── __init__.py │   └── ... ├── .python-version ├── readme.md └── pyproject.toml 

from fastapi import fastapi from pydantic import basemodel  app = fastapi()   class hello(basemodel):     message: str   @app.get("/", response_model=hello) async def hello() -> hello:     return hello(message="hi, i am using fastapi") 

from python:3.11-slim  env pythonunbuffered=1  copy --from=ghcr.io/astral-sh/uv:0.5.11 /uv /uvx /bin/  env uv_compile_byte=1  env uv_link_mode=copy  # change the working directory to the `app` directory workdir /app  env path="/app/.venv/bin:$path"  copy ./pyproject.toml ./uv.lock ./.python-version /app/  # install dependencies run --mount=type=cache,target=/root/.cache/uv      --mount=type=bind,source=uv.lock,target=uv.lock      --mount=type=bind,source=pyproject.toml,target=pyproject.toml      uv sync --frozen --no-install-project --no-dev  # copy the project into the image copy ./app /app/app  # sync the project run --mount=type=cache,target=/root/.cache/uv      uv sync --frozen --no-dev  cmd ["fastapi", "dev", "app/main.py", "--host", "0.0.0.0"] 

services:   app:     # build configuration for the "app" service:     # - 'context: .' tells docker to use the current directory as the build context     # - 'dockerfile: dockerfile' specifies the file to use for building the image     build:       context: .       dockerfile: dockerfile      # this sets the default working directory inside the container     working_dir: /app      # mounts the local "app" directory into the container so code changes are reflected without rebuild     volumes:       - ./app:/app/app      # maps the container port 8000 to the host machine port defined by app_port     # if app_port is not set, it defaults to 8000     ports:       - "${app_port:-8000}:8000"      # passes the database_url environment variable to the container     environment:       - database_url=${database_url}      # ensures the 'app' service won't start until 'postgres' is running     depends_on:       - postgres    postgres: ## just for reference...     # official postgres image version 15     image: postgres:15      # set up the default database, user, and password     environment:       postgres_db: ${postgres_db}       postgres_user: ${postgres_user}       postgres_password: ${postgres_password}      # this volume stores postgresql data outside of the container filesystem,     # preserving data between container restarts or recreations     volumes:       - postgres_data:/var/lib/postgresql/data  # declare named volumes to be used for persistent storage volumes:   postgres_data: {} 

repos:   - repo: https://github.com/pre-commit/pre-commit-hooks     rev: v4.4.0     hooks:       - id: check-added-large-files       - id: check-toml       - id: check-yaml         args:           - --unsafe       - id: end-of-file-fixer       - id: trailing-whitespace   - repo: https://github.com/astral-sh/ruff-pre-commit     rev: v0.8.6     hooks:       - id: ruff         args: [--fix]       - id: ruff-format  

[tool.mypy] strict = true exclude = ["venv", ".venv", "alembic"] ignore_missing_imports = true allow_untyped_decorators = true plugins = ["pydantic.mypy"] follow_imports = "silent" warn_redundant_casts = true warn_unused_ignores = true disallow_any_generics = true no_implicit_reexport = true disallow_untyped_defs = true  [tool.pydantic-mypy] init_forbid_extra = true init_typed = true warn_required_dynamic_aliases = true  [tool.ruff] target-version = "py312" exclude = ["venv", ".venv", "alembic"] line-length = 100 indent-width = 4  [tool.ruff.lint] select = [     "E",  # pycodestyle errors     "W",  # pycodestyle warnings     "F",  # pyflakes     "I",  # isort     "B",  # flake8-bugbear     "C4",  # flake8-comprehensions     "UP",  # pyupgrade     "ARG001", # unused arguments in functions ] ignore = [     "B008",  # do not perform function calls in argument defaults     "W191",  # indentation contains tabs     "B904",  # Allow raising exceptions without from e, for HTTPException ]  [tool.ruff.format] quote-style = "double" line-ending = "auto"  [tool.ruff.lint.pyupgrade] # Preserve types, even if a file imports `from __future__ import annotations`. keep-runtime-typing = true  [tool.pyright] ignore = ["alembic"]