Entrypoint #FAIL - no such file or directory - docker

Question

In getting a django env setup, was working on how to containerize the env. In doing so, I can't get the entrypoint to work on Docker for Windows/Linux.
Successfully built e9cb8e009d91
Successfully tagged avengervision_web:latest
avengervision_db_1 is up-to-date
Starting avengervision_web_1 ... done
CONTAINER ID IMAGE COMMAND CREATED
1da83169ba41 avengervision_web "sh /usr/src/app/ent…" 44 minutes
STATUS PORTS NAMES
Exited (2) 20 seconds ago avengervision_web_1
docker logs 1da83169ba41
sh: can't open '/usr/src/app/entrypoint.sh': No such file or directory
Have simplified the entrypoint.sh to just get it to execute.
Have tried
ENTRYPOINT ["sh","/usr/src/app/entrypoint.sh"] &
ENTRYPOINT ["/usr/src/app/entrypoint.sh"]
Made sure the line ending in git and vscode are set to LF and ran the code through dos2unix
Ran the same Docker Compose on Windows and Linux and get the same exception on both
added to the Dockerfile as extra precaution to remove all line endings and made sure to chmod +x the script
Commented out the EntryPoint and ran docker run -tdi and I was able to docker attach and execute the script from within the container without any issue.
*****docker-compose.yml*****
version: '3.7'
services:
web:
build:
context: .
dockerfile: ./docker/Dockerfile
#command: python manage.py runserver 0.0.0.0:8000
volumes:
- ./main/:/usr/src/app/
ports:
- 8000:8000
environment:
- DEBUG=1
- SECRET_KEY=foo
- SQL_ENGINE=django.db.backends.postgresql
- SQL_DATABASE=hello_django_dev
- SQL_USER=hello_django
- SQL_PASSWORD=hello_django
- SQL_HOST=db
- SQL_PORT=5432
- DATABASE=postgres
depends_on:
- db
db:
image: postgres:11.2-alpine
volumes:
- postgres_data:/var/lib/postgresql/data/
environment:
- POSTGRES_USER=hello_django
- POSTGRES_PASSWORD=hello_django
- POSTGRES_DB=hello_django_dev
volumes:
postgres_data:
*****Dockerfile*****
# pull official base image
FROM python:3.7-alpine
# set work directory
WORKDIR /usr/src/app
# set environment varibles
ENV PYTHONDONTWRITEBYTECODE 1
ENV PYTHONUNBUFFERED 1
# install psycopg2
RUN apk update \
&& apk add --virtual build-deps gcc python3-dev musl-dev \
&& apk add postgresql-dev \
&& pip install psycopg2 \
&& apk del build-deps
# install dependencies
RUN pip install --upgrade pip
RUN pip install pipenv
COPY ./docker/Pipfile /usr/src/app/Pipfile
RUN pipenv install --skip-lock --system --dev
# copy entrypoint.sh
COPY ./docker/entrypoint.sh /usr/src/app/entrypoint.sh
#RUN chmod +x /usr/src/app/entrypoint.sh
# copy project
COPY main /usr/src/app/main
COPY manage.py /usr/src/app
#RUN /usr/src/app/entrypoint.sh
RUN sed -i 's/\r$//' /usr/src/app/entrypoint.sh && \
chmod +x /usr/src/app/entrypoint.sh
# run entrypoint.sh
ENTRYPOINT ["sh","/usr/src/app/entrypoint.sh"]
*****entrypoint.sh*****
#!/bin/sh
if [ "$DATABASE" = "postgres" ]
then
echo "Waiting for postgres..."
while ! nc -z $SQL_HOST $SQL_PORT; do
sleep 0.1
done
echo "PostgreSQL started"
fi
echo "Testing"
#python /usr/src/app/manage.py flush
#python /usr/src/app/manage.py migrate
#python /usr/src/app/manage.py collectstatic --no-input --clear
exec "$#"
The goal in the end is that the container would be up and running with the django application created.

Answer 1

In leveraging the layout listed here - https://github.com/testdrivenio/django-on-docker it worked. The difference in what I was doing is I created a new docker directory at the root and then had docker compose leverage that. Everything seemed to copy into the container as it was supposed to, but for some reason the EntryPoint would not work. Without changing any of the code other than updating the references to the new file locations, everything worked. Below were the changes made:
web:
build:
context: .
dockerfile: ./docker/Dockerfile
to
web:
build: ./app
and then changing the directory structure from
Project Layout:
├───.vscode
├───docker
│ └───Dockerfile
│ └───entrypoint.sh
│ └───Pipfile
│ └───nginx
└───main
├───migrations
├───static
│ └───images
├───templates
├───Artwork
├───django-env
│ ├───Include
│ ├───Lib
│ └───Scripts
└───docker-compose.yml
└───managy.py
to
Project Layout:
├───.vscode
├───app
│ └───main
│ ├───migrations
│ ├───static
│ │ └───images
│ ├───templates
│ └───Dockerfile
│ └───entrypoint.sh
│ └───managy.py
│ └───Pipfile
├───Artwork
├───django-env
│ ├───Include
│ ├───Lib
│ └───Scripts
└───nginx
└───docker-compose.yml