added a docker dev environment

Signed-off-by: Jan Friedli <jan.friedli@immerda.ch>

Dockerfile

@@ -0,0 +1,8 @@
+FROM python:3.7
+ADD . /mat2-web
+WORKDIR /mat2-web
+RUN apt-get update
+RUN apt install -y python3-gi python3-gi-cairo gir1.2-poppler-0.18 \
+gir1.2-gdkpixbuf-2.0 libimage-exiftool-perl libgirepository1.0-dev
+RUN pip install -r requirements.txt
+CMD flask run --host=0.0.0.0

README.md

@@ -79,6 +79,12 @@ collector cronjob to remove leftover files. Besides, it can create a
 the uploads folder, to ensure that the uploaded files won't be recoverable
 between reboots.
 
+# Development
+Install docker and docker-compose and then run `docker-compose up` to setup
+the docker dev environment. Mat2-web is now accessible on your host machine at `localhost:5000`.
+Every code change triggers a restart of the app. 
+If you want to add/remove dependencies you have to rebuild the container.
+
 # Custom templates
 
 You can override the default templates from `templates/` by putting replacements

docker-compose.yml

@@ -0,0 +1,12 @@
+version: '2'
+services:
+    web:
+        build: .
+        environment:
+            - FLASK_APP=main.py
+            - FLASK_ENV=development
+        ports:
+            - "5000:5000"
+        volumes:
+            - .:/mat2-web
+        restart: always

requirements.txt

@@ -0,0 +1,5 @@
+mutagen==1.42.0
+ffmpeg==1.4
+bubblewrap==1.2.0
+mat2==0.9.0
+flask==1.0.3