Docker: make it possible to use it as cli

Dockerfile

@@ -7,4 +7,4 @@ RUN pip3 install --no-cache-dir /app[full] gunicorn
 
 USER 1000:1000
 
-CMD gunicorn --bind 0.0.0.0:8000 -w 4 --preload --access-logfile - morss
+ENTRYPOINT ["/app/docker-entry.sh"]

README.md

@@ -69,11 +69,10 @@ it with the system package manager.
 
 ### Docker
 
-Build & run
+Build
 
 ```shell
 docker build --tag morss https://git.pictuga.com/pictuga/morss.git --no-cache --pull
-docker run -p 8000:8000 morss
 ```
 
 With docker-compose:
@@ -91,7 +90,6 @@ Then execute
 
 ```shell
 docker-compose build --no-cache --pull
-docker-compose up
 ```
 
 ## Run
@@ -117,9 +115,19 @@ Works like a charm with [Tiny Tiny RSS](https://tt-rss.org/), and most probably
 other clients.
 
 
-#### Via Docker
+#### Using Docker
 
-See above (in Install)
+Run
+
+```shell
+docker run -p 8000:8000 morss
+```
+
+With docker-compose:
+
+```shell
+docker-compose up
+```
 
 #### Using Gunicorn
 
@@ -191,6 +199,12 @@ For example: `morss --clip http://feeds.bbci.co.uk/news/rss.xml`
 
 *(Brackets indicate optional text)*
 
+If using Docker:
+
+```shell
+docker run morss --clip http://feeds.bbci.co.uk/news/rss.xml
+```
+
 ### As a newsreader hook
 
 To use it, the newsreader [Liferea](http://lzone.de/liferea/) is required

docker-entry.sh

@@ -0,0 +1,7 @@
+#! /bin/sh
+
+if [ ! -z "$1" ]; then
+	morss $@
+else
+	gunicorn --bind 0.0.0.0:8000 -w 4 --preload --access-logfile - morss
+fi