I am currently trying to reduce my Docker Image Size (Without using Alpine, since a few dependencies wouldn't work properly for my project).
Dockerfile:
FROM ubuntu:latest
# set work directory
WORKDIR /usr/src/app
# set environment variables
ENV PYTHONDONTWRITEBYTECODE 1
ENV PYTHONUNBUFFERED 1
ENV DEBIAN_FRONTEND noninteractive
# install dependencies
# copy project
COPY . /usr/src/app
RUN apt-get update && apt-get install -y --no-install-recommends tesseract-ocr libpoppler-cpp-dev mupdf default-jre default-jdk python3-pip pkg-config && rm -rf /var/lib/apt/lists/* && apt autoremove && pip3 install -r requirements.txt
#RUN pip3 install virtualenv
#RUN python3 -m virtualenv env
#RUN source env/bin/activate
EXPOSE 8000
CMD ["python3", "manage.py", "runserver", "0.0.0.0:8000"]
I checked at docker hub and found the following image layers:
I came across multi-stage build using Docker but it's not much reducing the size. So, I want to know what other thing I can do to reduce the docker image size.
Current size is around 1.65GB
I also came across building your own Docker Image but the ubuntu:latest is already 72.8 MB around so I think it should work for me.
CodePudding user response：
I would start with replacing the ubuntu base image with a debian alternative. This should not bring too much pain and allows you to have access to -slim images.
e.g.
FROM debian:bullseye-slim
I also noticed you autoremove after pip install, I would advise you do this on the line you apt-install. Each layer is saved with all its content, so autoremove as soon as possible not to save it into the layer.
CodePudding user response：
Not quite a straight answer, but this blog series give a lot of context and solutions about reducing images size.