Added a first-pass implementation of using docker/docker-compose to r…

…un editly.

Dockerfile

@@ -0,0 +1,61 @@
+FROM jrottenberg/ffmpeg:4.3.1-ubuntu1804
+
+WORKDIR /app
+
+# Ensures tzinfo doesn't ask for region info.
+ENV DEBIAN_FRONTEND noninteractive
+
+## INSTALL NODE VIA NVM
+
+RUN apt-get update && apt-get install -y \
+    dumb-init \
+    xvfb
+
+# Source: https://gist.github.com/remarkablemark/aacf14c29b3f01d6900d13137b21db3a
+# replace shell with bash so we can source files
+RUN rm /bin/sh && ln -s /bin/bash /bin/sh
+
+# update the repository sources list
+# and install dependencies
+RUN apt-get update \
+    && apt-get install -y curl \
+    && apt-get -y autoclean
+
+# nvm environment variables
+ENV NVM_VERSION 0.37.2
+ENV NVM_DIR /usr/local/nvm
+ENV NODE_VERSION 14.4.0
+
+# install nvm
+# https://github.com/creationix/nvm#install-script
+RUN mkdir -p $NVM_DIR \
+    && curl --silent -o- https://raw.githubusercontent.com/creationix/nvm/v${NVM_VERSION}/install.sh | bash
+
+# install node and npm
+RUN source ${NVM_DIR}/nvm.sh \
+    && nvm install $NODE_VERSION \
+    && nvm alias default $NODE_VERSION \
+    && nvm use default
+
+# add node and npm to path so the commands are available
+ENV NODE_PATH ${NVM_DIR}/v${NODE_VERSION}/lib/node_modules
+ENV PATH      ${NVM_DIR}/versions/node/v${NODE_VERSION}/bin:$PATH
+
+# confirm installation
+RUN node -v
+RUN npm -v
+
+## INSTALL EDITLY
+
+# ## Install app dependencies
+COPY package.json /app/
+RUN npm install
+
+# Add app source
+COPY . /app
+
+# Ensure `editly` binary available in container
+RUN npm link
+
+ENTRYPOINT ["/usr/bin/dumb-init", "--", "xvfb-run", "--server-args", "-screen 0 1280x1024x24 -ac"]
+CMD [ "editly" ]

README.md

@@ -397,6 +397,17 @@ See [position.json5](examples/position.json5)
 | `zoomDirection` | Zoom direction for Ken Burns effect: `in`, `out` or `null` to disable | | |
 | `zoomAmount` | Zoom amount for Ken Burns effect | `0.1` | |
 
+## Docker
+
+This should help you use editly as a containerized CLI, without worrying about
+getting all the right versions of dependencies on your system.
+
+```
+docker-compose up
+docker-compose run container bash -c "cd examples && editly audio1.json5 --out /outputs/audio1.mp4"
+docker cp container:/outputs/audio1.mp4
+```
+
 ## Troubleshooting
 
 - If you get `Error: The specified module could not be found.`, try: `npm un -g editly && npm i -g --build-from-source editly` (see [#15](https://github.com/mifi/editly/issues/15))

docker-compose.yml

@@ -0,0 +1,14 @@
+version: "3.8"
+
+services:
+  container:
+    container_name: editly
+    image: editly/editly:latest
+    build:
+      context: .
+      dockerfile: Dockerfile
+    volumes:
+      - "outputs:/outputs"
+
+volumes:
+  outputs: