Docker: Dockerfile
Docker Init
Quote
The docker init makes dockerization a piece of cake, especially for the Docker newbies. It eliminates the manual task of writing Dockerfiles and other configuration files, saving time and minimizing errors.1
docker init is a command-line utility that helps in the initialization of Docker
resources within a project. It creates Dockerfiles, Compose files, and .dockerignore
files based on the project’s requirements.
Note
Latest version of docker init supports Go, Python, Node.js, Rust, ASP.NET,
PHP, and Java. It is available with Docker Desktop.
Multi-Stage Builds
# temp stage
FROM python:3.9-slim as builder
WORKDIR /app
ENV PYTHONDONTWRITEBYTECODE 1
ENV PYTHONUNBUFFERED 1
RUN apt-get update && \
apt-get install -y --no-install-recommends gcc
COPY requirements.txt .
RUN pip wheel --no-cache-dir --no-deps --wheel-dir /app/wheels -r requirements.txt
# final stage
FROM python:3.9-slim
WORKDIR /app
COPY --from=builder /app/wheels /wheels
COPY --from=builder /app/requirements.txt .
RUN pip install --no-cache /wheels/*