Run collectstatic as a background process for docker container

Dockerfile

@@ -3,6 +3,7 @@ ENV PYTHONUNBUFFERED 1
 RUN mkdir /code && \
     apt-get update && \
     apt-get install -y --no-install-recommends gcc libc6-dev libc-dev libssl-dev make automake libtool autoconf pkg-config libffi-dev && \
+    pip3 install dumb-init && \
     rm -rf /var/lib/apt/lists/*
 WORKDIR /code
 COPY requirements/base.txt /code/
@@ -11,3 +12,4 @@ RUN pip install -r test.txt
 COPY requirements/dev.txt /code/
 RUN pip install -r dev.txt && \
     apt-get purge -y --auto-remove gcc libc6-dev libc-dev libssl-dev make automake libtool autoconf pkg-config libffi-dev
+ENTRYPOINT ["/usr/local/bin/dumb-init", "--"]

bin/docker-command.bash

@@ -1,9 +1,8 @@
-#!/bin/bash
+#!/usr/local/bin/dumb-init /bin/bash
 
 cd app
 python manage.py createcachetable
-python manage.py collectstatic --noinput -i other
+python manage.py collectstatic --noinput -i other &
 python manage.py migrate
 python manage.py get_prices
 python manage.py runserver 0.0.0.0:8000
-

docker-compose.yml

@@ -30,7 +30,7 @@ services:
       - PYTHONUNBUFFERED=1
       - PYTHONPATH=/code/app
     build: .
-    command: bash bin/docker-command.bash
+    command: ["bash", "bin/docker-command.bash"]
     volumes:
       - .:/code
     ports: