when creating django project via docker container it says sh: django-admin: not found

Question

I created a docker python image on top of alpine the problem is that when I want to start a django app it can not find django and it is right bcz when I type pip list, it does not have django and other packages.

ps: when creating the images it shows that it is collecting django and other packages

this is the requirements.txt file

Django>=3.2.4,<3.3
djangorestframework>=3.12.4,<3.13

this is my Dockerfile:

FROM python:3.9-alpine3.13
LABEL maintainer="siavash"

ENV PYTHONUNBUFFERED 1

COPY ./requirements.txt /tmp/requirements.txt
COPY ./requirements.dev.txt /tmp/requirements.dev.txt
COPY ./app /app
WORKDIR /app
EXPOSE 8000

ARG DEV=false
RUN python -m venv /py && \
    /py/bin/pip install --upgrade pip && \
    /py/bin/pip install -r /tmp/requirements.txt && \
    if [ $DEV = "true" ]; \
        then /py/bin/pip install -r /tmp/requirements.dev.txt ; \
    fi && \
    rm -rf /tmp && \
    adduser \
        --disabled-password \
        --no-create-home \
        django-user


ENV PATH = "/py/bin:$PATH"

USER django-user

and this is docker-compose.yml


version: "3.9"

services:
  app:
    build:
      context: .
      args:
        - DEV=true
    ports:
      - "8000:8000"
    volumes:
      - ./app:/app
    command: >
      sh -c "python manage.py runserver 0.0.0.0:8000"

and this is the command that I use:

docker-compose run --rm app sh -c "django-admin startproject app . "

BTW the image is created successfully

please provide your requirements file – Manoj Tolagekar Sep 12 '22 at 10:42 — Manoj Tolagekar, Sep 12 '22 at 10:42
@ManojTolagekar i provided that – django developer Sep 12 '22 at 10:47 — django developer, Sep 12 '22 at 10:47
please tell error what kind of getting – Manoj Tolagekar Sep 12 '22 at 11:16 — Manoj Tolagekar, Sep 12 '22 at 11:16
@ManojTolagekar sh: django-admin: not found – django developer Sep 12 '22 at 11:21 — django developer, Sep 12 '22 at 11:21
just remove versions and build docker file. – Manoj Tolagekar Sep 13 '22 at 05:59 — Manoj Tolagekar, Sep 13 '22 at 05:59

Benzion.R · Answer 1 · 2022-09-12T12:37:06.597

In normal cases, you should not use virtualenv inside Docker Container. see https://stackoverflow.com/a/48562835/19886776
Inside the container there is no need to create an additional "django-user" user because the container is an isolated environment.

Below is code that creates a new Django project through a Docker Container

requirements.txt

Django>=3.2.4,<3.3

Dockerfile

FROM python:3.9-alpine3.13

ENV PYTHONUNBUFFERED 1

COPY ./requirements.txt /tmp/requirements.txt

RUN pip install -r /tmp/requirements.txt && \
    rm /tmp/requirements.txt

WORKDIR /app

docker-compose.yml

version: "3.9"

services:
  app:
    build:
      context: .
    ports:
      - "8000:8000"
    volumes:
      - ./app:/app
    command: >
      sh -c "python manage.py runserver 0.0.0.0:8000"

The commands to create the new project

docker-compose build
docker-compose run --rm app sh -c "django-admin startproject app ."
docker-compose up -d

To edit files that created by the docker container, we need to fix the ownership of the new files.

sudo chown -R $USER:$USER app

but what if i want to use venv? what should i do to fix the problem? — django developer, Sep 12 '22 at 13:23
Your error "django-admin: not found" is because you are not inside the venv. Django is not installed in your container's general interpreter. Therefore, you will have to go into the venv, then produce the project. — Benzion.R, Sep 12 '22 at 14:01

score 1 · Accepted Answer · answered Sep 14 '22 at 14:07

So the reason why this happening i believe is because of a very simple error that's hard to see ENV PATH = "/py/bin:$PATH" should be ENV PATH="/py/bin:$PATH"

and you might run into some django-user issue USER django-user so you can use this one i pasted.

Everything else looks correct.

score 0 · Answer 3 · answered Sep 12 '22 at 10:53

0

Try pip3 install instead of pip install

If that doesn't work, try installing it separately in a step and check.

answered Sep 12 '22 at 10:53

Abhishek S

546
3
16

i tried pip3 install but got the same result what shoud i do now sir? – django developer Sep 12 '22 at 11:03

when creating django project via docker container it says sh: django-admin: not found

3 Answers3