I was trying to make a basic container as a learning project that should download Django from PyPI and run the default server. For that I made 3 files i.e.
docker-compose.yml
version: '3'
services:
web:
build: .
command: python manage.py runserver 0.0.0.0:8000
volumes:
- .:/app
ports:
- "8000:8000"
Dockerfile
FROM python:3
ENV PYTHONUNBUFFERED 1
RUN mkdir /app
WORKDIR /app
COPY /requirements.txt /app/
RUN pip install -r requirements.txt
COPY . /app/
requirements.txt
Django==4.0
the command that I used in terminal and the output are given below in the terminal snippet:
samar#wasseypur:~/Desktop/project2/telusko$ sudo docker-compose run web django-admin startproject mysite .
[sudo] password for samar:
Creating telusko_web_run ... done
Error response from daemon: OCI runtime create failed: container_linux.go:380: starting container process caused: exec: "django-admin": executable file not found in $PATH: unknown
ERROR: 1
Related
I am trying to build and run django application with docker and docker-compose.
docker-compose build example_app and docker-compose run example_app run without errors, but when I go to http://127.0.0.1:8000/ page doesn't open, I'm just getting "page is unavailable" error in the browser.
Here is my Dockeffile, docker-compose.yml and project structure
Dockerfile
FROM python:3.9-buster
RUN mkdir app
WORKDIR /app
COPY ./requirements.txt /app/requirements.txt
COPY ./requirements_dev.txt /app/requirements_dev.txt
RUN pip install --upgrade pip
RUN pip install -r /app/requirements.txt
docker-compose.yml
version: '3'
services:
example_app:
image: example_app
build:
context: ../
dockerfile: ./docker/Dockerfile
command: bash -c "cd app_examples/drf_example && python manage.py runserver"
volumes:
- ..:/app
ports:
- 8000:8000
project structure:
──app
──app_examples/drf_example/
────manage.py
────api
────drf_example
──requirements.txt
──requirements_dev.txt
──docker/
────docker-compose.yml
────Dockerfile
By default, Django apps bind to 127.0.0.1 meaning that they'll only accept connections from the local machine. In a container context, the local machine is the container, so your app won't accept connections from outside the container.
To get it to accept connections from anywhere, you add the bind address to the runserver command. In your case, you'd change the command in your docker-compose.yml file to
command: bash -c "cd app_examples/drf_example && python manage.py runserver 0.0.0.0:8000"
you need to expose port 8000 in your Docker file
FROM python:3.9-buster
EXPOSE 8000
RUN mkdir app
WORKDIR /app
COPY ./requirements.txt /app/requirements.txt
COPY ./requirements_dev.txt /app/requirements_dev.txt
RUN pip install --upgrade pip
RUN pip install -r /app/requirements.txt
I am trying to create 2x Docker containers:
For my WEB API
For PostgreSQL DB
I am using docker-compose in order to build these containers. Even though I can successfully build them using docker-compose build command, whenever I go to inspect the logs using docker-compose logs -f command, I am getting the following error message:
...
db_1 | 2020-08-19 12:39:07.681 UTC [45] LOG: database system was shut down at 2020-08-19 12:39:07 UTC
db_1 | 2020-08-19 12:39:07.686 UTC [1] LOG: database system is ready to accept connections
web_1 | python: can't open file 'manage.py': [Errno 2] No such file or directory
nlp-influencertextanalysis_web_1 exited with code 2
Everything seems fine with db container, but for some reason inside web container Python cannot locate manage.py file. Here is my file structure:
And here is code for my docker-compose.yml:
version: '3.7'
services:
web:
build: ./services/web
command: python manage.py run -h 0.0.0.0
volumes:
- ./services/web/:/usr/src/app/
ports:
- 5000:5000
env_file:
- ./.env.dev
depends_on:
- db
db:
image: postgres:12-alpine
volumes:
- postgres_data:/var/lib/postgresql/data/
environment:
- POSTGRES_USER=user1
- POSTGRES_PASSWORD=test123
- POSTGRES_DB=influencer_analysis
volumes:
postgres_data:
And here is my code for Dockerfile:
FROM python:3.8.1-slim-buster AS training
# set work directory
WORKDIR /usr/src/app
# set environment variables
ENV PYTHONDONTWRITEBYTECODE 1
ENV PYTHONUNBUFFERED 1
# install system dependencies
RUN apt-get update && apt-get install -y netcat
RUN pip install --upgrade pip
COPY ./requirements.txt /usr/src/app/requirements.txt
RUN pip install -r requirements.txt
# install NLTK dependencies
RUN python -c "import nltk; nltk.download('punkt')"
# copy project
COPY . /usr/src/app/
WORKDIR /usr/src/app/experiments
RUN python train.py --data data/HaInstagramPostDetails.xlsx --update 1
I should note that I've printed out all fines that are located in /usr/src/app when train.py is executed with RUN command from Docker file, and manage.py is there.
I believe the problem is that you have changed the working directory at the end of your Docker file.
You can try to give an exact path to your manage.py file or.
Change the working directory in the Docker file at the end that directs to the app directory.
I think there is problem while changing the Working directory. It should have been
WORKDIR /usr/src/app/web/experiments based on the folder structure.
I have created a simple Docker file for DJango project and when I issue docker run, I am able to access through browser.
docker run -p 8000:8000 s3bucket-ms:1
Here is the Docker File:
FROM python:3.6.7-alpine
ENV PYTHONUNBUFFERED 1
COPY ./requirements.txt /requirements.txt
RUN pip install --upgrade pip
RUN apk update \
&& apk add postgresql-dev gcc python3-dev musl-dev
RUN pip install -r requirements.txt
RUN mkdir /app
WORKDIR /app
ADD ./s3bucket /app/
EXPOSE 8000
CMD ["python", "./manage.py", "runserver", "0.0.0.0:8000"]
However, when I am using Docker Compose , i can't access the project through the browser.
Here is the docker-compose.yml
version: '3'
services:
web:
build: .
command: python ./manage.py runserver 8000
ports:
- "8000:8000"
With Docker Compose , I also commented CMD within Docker File.
Output from Docker Compose UP
web_1 | Run 'python manage.py migrate' to apply them.
web_1 | February 17, 2020 - 14:29:22
web_1 | Django version 3.0.3, using settings 's3bucket.settings'
web_1 | Starting development server at http://127.0.0.1:8000/
web_1 | Quit the server with CONTROL-C.
Am I missing something? Any help is appreciated.
Thanks,
Add EXPOSE 8000 on your Dockerfile
Update1:
With docker run
docker run \
-v /path/to/s3bucket:/app \ # absolute path
-p 8000:8000 \
s3bucket-ms:1
With docker-compose
version: '3'
services:
web:
build: .
command: python ./manage.py runserver 8000
volumes:
- /path/to/s3bucket:/app # absolute path
ports:
- "8000:8000"
More infos on https://docs.docker.com/storage/volumes/
I have followed the steps in the official docker tutorial for getting up and running with django: https://docs.docker.com/compose/django/
It works fine until I have to run docker-compose up
It doesn't directly give me an error, but it won't run the server either, stopping at this point:
(Screenshot of the Docker Quickstart Terminal)
docker-compose.yml:
version: '3'
services:
db:
image: postgres
web:
build: .
command: >
bash -c
"python3 manage.py migrate
python3 manage.py runserver 0.0.0.0:8000"
volumes:
- .:/code
ports:
- "8000:8000"
depends_on:
- db
Dockerfile:
FROM python:3
ENV PYTHONUNBUFFERED 1
RUN mkdir /code
WORKDIR /code
ADD requirements.txt /code/
RUN pip install -r requirements.txt
ADD . /code/
I am on Windows and have therefore used docker-toolbox.
Thanks for your suggestions!
Start docker-compose in detached mode:
docker-compose up -d
check your django container id
docker ps
then log into container:
docker exec -it yourDjangoContainerID bash
then go to directory where manage.py file is, and type
python manage.py migrate
You can put the migration command into your docker-compose.yml file. Something like
web:
command: >
bash -c
"python3 manage.py migrate
python3 manage.py runserver 0.0.0.0:8000"
replacing
web:
command: python3 manage.py runserver 0.0.0.0:8000
This will apply migrations every time you do docker-compose up.
I just start a sample django app. And use docker to run it. My docker image like:
FROM python:3.5
ENV PYTHONUNBUFFERED 1
RUN mkdir /code
WORKDIR /code
ADD requirements.txt /code/
RUN pip install -r requirements.txt
ADD . /code/
My docker-compose.yml file:
version: '2'
services:
django:
build: .
command: python manage.py runserver 0.0.0.0:8000
volumes:
- .:/code
ports:
- "8000:8000"
When I run docker-compose up command,it build successfully but failed in running command: python manage.py runserver 0.0.0.0:8000,it complained python: can't open file 'manage.py': [Errno 2] No such file or directory.
Is this a bug in docker for windows? Because I just follow the docs of docker Quickstart: Docker Compose and Django
Thank for you help!
I think you either missed this step: docker-compose run web django-admin.py startproject composeexample . or you're using a directory that isn't available to the Virtual Machine that is running docker.
If it works when you remove volumes: .:/code from the Compose file, then you know the issue is the volumes.
I believe by default only the users home directory is shared with the VM, so if you create a project outside of that tree, you won't have access to the files from volumes.