Added Docker configuration

README.md

@@ -16,6 +16,31 @@ $ chmod +x Gitify
 
 Please see [the Installation wiki](https://github.com/modmore/Gitify/wiki/1.-Installation) for more details.
 
+## Docker Usage
+
+### Example usage:
+
+```
+docker build -t gitify docker
+docker run --rm -v "src:/var/www/html" gitify help
+```
+
+### Example docker-compose configuration:
+
+``` yaml
+version: '3.1'
+
+services:
+
+  [...]
+
+  gitify:
+    build: docker 
+    volumes:
+      - "./src:/var/www/html"
+```
+
+Notice: gitify's container needs to be able to access the database and the sourcecode of ModX.
 
 ## Documentation
 

docker/Dockerfile

@@ -0,0 +1,14 @@
+FROM composer:1.7.2
+
+RUN git clone https://github.com/modmore/Gitify.git /usr/local/lib/gitify && \
+    cd /usr/local/lib/gitify && \
+    composer install && \
+    ln -s /usr/local/lib/gitify/Gitify /usr/local/bin/Gitify && \
+    mkdir /gitify
+RUN apk --no-cache add mysql-client
+RUN docker-php-ext-install pdo_mysql
+
+COPY docker-entrypoint.sh /
+ENTRYPOINT ["/docker-entrypoint.sh"]
+VOLUME ["/var/www/html", "/gitify"]
+WORKDIR /var/www/html

docker/docker-entrypoint.sh

@@ -0,0 +1,18 @@
+#!/bin/sh
+set -euo pipefail
+
+if [ "$#" -ne 1 ]; then
+    set -- Gitify
+fi
+
+# first arg is a option 
+if [ "${1#-}" != "$1" ]; then
+    set -- Gitify "$@"
+fi
+
+# if our command is a valid gitify subcommand, let's invoke it through gitify instead
+if Gitify help "$1" > /dev/null 2>&1; then
+    set -- Gitify "$@"
+fi
+
+exec "$@"