Move to the python:alpine docker image

- Switch the base images for local and production to alpine
- Install extra dependencies for psycopg2, Pillow and cffi
- Change shebang for shell scripts to use sh instead of bash

{{cookiecutter.project_slug}}/compose/local/django/Dockerfile

@@ -1,7 +1,16 @@
-FROM python:3.5
+FROM python:3.5-alpine
 
 ENV PYTHONUNBUFFERED 1
 
+RUN apk update \
+  # psycopg2 dependencies
+  && apk add --virtual build-deps gcc python3-dev musl-dev \
+  && apk add postgresql-dev \
+  # Pillow dependencies
+  && apk add jpeg-dev zlib-dev freetype-dev lcms2-dev openjpeg-dev tiff-dev tk-dev tcl-dev \
+  # CFFI dependencies
+  && apk add libffi-dev openssl-dev py-cffi
+
 # Requirements have to be pulled and installed here, otherwise caching won't work
 COPY ./requirements /requirements
 RUN pip install -r /requirements/local.txt

{{cookiecutter.project_slug}}/compose/local/django/celery/beat/start.sh

@@ -1,4 +1,4 @@
-#!/usr/bin/env bash
+#!/bin/sh
 
 set -o errexit
 set -o pipefail

{{cookiecutter.project_slug}}/compose/local/django/celery/worker/start.sh

@@ -1,4 +1,4 @@
-#!/usr/bin/env bash
+#!/bin/sh
 
 set -o errexit
 set -o pipefail

{{cookiecutter.project_slug}}/compose/local/django/start.sh

@@ -1,4 +1,4 @@
-#!/usr/bin/env bash
+#!/bin/sh
 
 set -o errexit
 set -o pipefail

{{cookiecutter.project_slug}}/compose/production/django/Dockerfile

@@ -1,7 +1,16 @@
-FROM python:3.5
+FROM python:3.5-alpine
 
 ENV PYTHONUNBUFFERED 1
 
+RUN apk update \
+  # psycopg2 dependencies
+  && apk add --virtual build-deps gcc python3-dev musl-dev \
+  && apk add postgresql-dev \
+  # Pillow dependencies
+  && apk add jpeg-dev zlib-dev freetype-dev lcms2-dev openjpeg-dev tiff-dev tk-dev tcl-dev \
+  # CFFI dependencies
+  && apk add libffi-dev openssl-dev py-cffi
+
 RUN groupadd -r django \
     && useradd -r -g django django
 

{{cookiecutter.project_slug}}/compose/production/django/celery/beat/start.sh

@@ -1,4 +1,4 @@
-#!/usr/bin/env bash
+#!/bin/sh
 
 set -o errexit
 set -o pipefail

{{cookiecutter.project_slug}}/compose/production/django/celery/worker/start.sh

@@ -1,4 +1,4 @@
-#!/usr/bin/env bash
+#!/bin/sh
 
 set -o errexit
 set -o pipefail

{{cookiecutter.project_slug}}/compose/production/django/entrypoint.sh

@@ -1,4 +1,4 @@
-#!/usr/bin/env bash
+#!/bin/sh
 
 set -o errexit
 set -o pipefail

{{cookiecutter.project_slug}}/compose/production/django/gunicorn.sh

@@ -1,4 +1,4 @@
-#!/usr/bin/env bash
+#!/bin/sh
 
 set -o errexit
 set -o pipefail