Based Docker image on alpine to have a smaller (and faster to build) image

api/Dockerfile

-FROM python:3.6
+FROM alpine:3.8
 
-ENV PYTHONUNBUFFERED 1
-
-# Requirements have to be pulled and installed here, otherwise caching won't work
-RUN echo 'deb http://httpredir.debian.org/debian/ jessie-backports main' > /etc/apt/sources.list.d/ffmpeg.list
-COPY ./requirements.apt /requirements.apt
-RUN apt-get update; \
-    grep "^[^#;]" requirements.apt | \
-    grep -Fv "python3-dev" | \
-    xargs apt-get install -y --no-install-recommends; \
-    rm -rf /usr/share/doc/* /usr/share/locale/*
+RUN \
+    echo 'installing dependencies' && \
+    apk add                \
+    bash             \
+    git             \
+    gettext            \
+    musl-dev           \
+    gcc \
+    postgresql-dev \
+    python3-dev        \
+    py3-psycopg2       \
+    py3-pillow         \
+    libldap            \
+    ffmpeg             \
+    libpq              \
+    libmagic           \
+    libffi-dev         \
+    zlib-dev           \
+    openldap-dev && \
+    \
+    \
+    ln -s /usr/bin/python3 /usr/bin/python
 
+RUN mkdir /requirements
 COPY ./requirements/base.txt /requirements/base.txt
-RUN pip install -r /requirements/base.txt
-
-COPY . /app
-
-# Since youtube-dl code is updated fairly often, we split it here
-RUN pip install --upgrade youtube-dl
+RUN \
+    echo 'fixing requirements file for alpine' && \
+    sed -i '/Pillow/d' /requirements/base.txt && \
+    \
+    \
+    echo 'installing pip requirements' && \
+    pip3 install --no-cache-dir --upgrade pip && \
+    pip3 install --no-cache-dir setuptools wheel && \
+    pip3 install --no-cache-dir -r /requirements/base.txt
 
-WORKDIR /app
+ARG install_dev_deps=0
+COPY ./requirements/*.txt /requirements/
+RUN \
+    if [ "$install_dev_deps" = "1" ] ; then echo "Installing dev dependencies" && pip3 install --no-cache-dir -r /requirements/local.txt -r /requirements/test.txt ; else echo "Skipping dev deps installation" ; fi
 
 ENTRYPOINT ["./compose/django/entrypoint.sh"]
 CMD ["./compose/django/daphne.sh"]
+
+COPY . /app
+WORKDIR /app

api/compose/django/dev-entrypoint.sh

-#!/bin/bash
+#!/bin/sh
 set -e
 exec "$@"

api/compose/django/entrypoint.sh

-#!/bin/bash
+#!/bin/sh
 set -e
 # This entrypoint is used to play nicely with the current cookiecutter configuration.
 # Since docker-compose relies heavily on environment variables itself for configuration, we'd have to define multiple

api/docker/Dockerfile.test

-FROM python:3.6
-
-ENV PYTHONUNBUFFERED 1
-
-# Requirements have to be pulled and installed here, otherwise caching won't work
-RUN echo 'deb http://httpredir.debian.org/debian/ jessie-backports main' > /etc/apt/sources.list.d/ffmpeg.list
-COPY ./requirements.apt /requirements.apt
-RUN apt-get update; \
-    grep "^[^#;]" requirements.apt | \
-    grep -Fv "python3-dev" | \
-    xargs apt-get install -y --no-install-recommends; \
-    rm -rf /usr/share/doc/* /usr/share/locale/*
-
-RUN mkdir /requirements
-COPY ./requirements/base.txt /requirements/base.txt
-RUN pip install -r /requirements/base.txt
-COPY ./requirements/local.txt /requirements/local.txt
-RUN pip install -r /requirements/local.txt
-COPY ./requirements/test.txt /requirements/test.txt
-RUN pip install -r /requirements/test.txt
-
-COPY . /app
-WORKDIR /app
-ENTRYPOINT ["compose/django/dev-entrypoint.sh"]

changes/changelog.d/alpine.enhancement

+Based Docker image on alpine to have a smaller (and faster to build) image

dev.yml

@@ -39,17 +39,20 @@ services:
     networks:
       - internal
 
-  celeryworker:
+  api:
     env_file:
       - .env.dev
       - .env
-    build:
+    build: &backend
       context: ./api
-      dockerfile: docker/Dockerfile.test
-    links:
-      - postgres
-      - redis
-    command: celery -A funkwhale_api.taskapp worker -l debug -B
+      dockerfile: Dockerfile
+      args:
+        install_dev_deps: 1
+    entrypoint: compose/django/dev-entrypoint.sh
+    command: python /app/manage.py runserver 0.0.0.0:${FUNKWHALE_API_PORT-5000}
+    volumes:
+      - ./api:/app
+      - "${MUSIC_DIRECTORY_PATH-./data/music}:/music:ro"
     environment:
       - "FUNKWHALE_HOSTNAME=${FUNKWHALE_HOSTNAME-localhost}"
       - "FUNKWHALE_HOSTNAME_SUFFIX=funkwhale.test"
@@ -57,22 +60,23 @@ services:
       - "FUNKWHALE_PROTOCOL=${FUNKWHALE_PROTOCOL-http}"
       - "DATABASE_URL=postgresql://postgres@postgres/postgres"
       - "CACHE_URL=redis://redis:6379/0"
-    volumes:
-      - ./api:/app
-      - "${MUSIC_DIRECTORY_PATH-./data/music}:/music:ro"
+    links:
+      - postgres
+      - redis
     networks:
       - internal
-  api:
+    cap_add:
+      - SYS_PTRACE
+
+  celeryworker:
     env_file:
       - .env.dev
       - .env
-    build:
-      context: ./api
-      dockerfile: docker/Dockerfile.test
-    command: python /app/manage.py runserver 0.0.0.0:${FUNKWHALE_API_PORT-5000}
-    volumes:
-      - ./api:/app
-      - "${MUSIC_DIRECTORY_PATH-./data/music}:/music:ro"
+    build: *backend
+    links:
+      - postgres
+      - redis
+    command: celery -A funkwhale_api.taskapp worker -l debug -B
     environment:
       - "FUNKWHALE_HOSTNAME=${FUNKWHALE_HOSTNAME-localhost}"
       - "FUNKWHALE_HOSTNAME_SUFFIX=funkwhale.test"
@@ -80,13 +84,11 @@ services:
       - "FUNKWHALE_PROTOCOL=${FUNKWHALE_PROTOCOL-http}"
       - "DATABASE_URL=postgresql://postgres@postgres/postgres"
       - "CACHE_URL=redis://redis:6379/0"
-    links:
-      - postgres
-      - redis
+    volumes:
+      - ./api:/app
+      - "${MUSIC_DIRECTORY_PATH-./data/music}:/music:ro"
     networks:
       - internal
-    cap_add:
-      - SYS_PTRACE
   nginx:
     command: /entrypoint.sh
     env_file: