Add docker

Dockerfile

@@ -0,0 +1,11 @@
+FROM python:3.7.4
+
+COPY . /app
+WORKDIR "/app"
+
+# Development version:
+
+RUN pip install -r requirements.txt && \
+    pip install -r requirements-optional.txt
+
+RUN python3.7 setup.py develop

README.md

@@ -86,6 +86,16 @@ Build the documentation like so. ::
 
 Outputs will go in ``doc/_*``.
 
+**Developing in Docker**
+
+You can run and develop in a docker container.  Install docker.  Then:
+
+    docker-compose build
+    docker-compose run --service-ports cubes /bin/bash
+
+In that bash shell, you can run the examples.  The cubes server on
+port 5000 inside the container will be accessible on port 5005 outside
+(see docker-compose.yaml).
 
 Requirements
 ------------

docker-compose.yaml

@@ -0,0 +1,15 @@
+version: "3"
+
+services:
+  cubes:
+    build: .
+    environment:
+      - PYTHONDONTWRITEBYTECODE=true
+      - PYTHONPATH=.
+    volumes:
+      # mount current directory so that changes in files are reflected
+      # in the running environment
+      - .:/app
+    # Open up 5005, hopefully not in conflict with any other you may be running
+    ports:
+      - "5005:5000"

examples/hello_world/slicer.ini

@@ -2,7 +2,8 @@
 log_level: info
 
 [server]
-host: localhost
+# 0.0.0.0 is accessible outside Docker if mapped
+host: 0.0.0.0
 port: 5000
 reload: yes
 prettyprint: yes
@@ -14,5 +15,3 @@ url: sqlite:///data.sqlite
 
 [models]
 main: model.json
-
-