Shrink Docker Image, bump version, docker run as non-root

Dockerfile

@@ -1,4 +1,6 @@
-FROM python:3
+FROM python:3-slim
+
+RUN useradd sungather
 
 WORKDIR /usr/src/sungather
 
@@ -6,6 +8,10 @@ COPY requirements.txt ./
 RUN pip install --no-cache-dir --upgrade -r requirements.txt
 
 COPY SunGather/ .
-RUN touch /config/config.yaml
 
-CMD [ "python", "sungather.py -c /config/config.yaml" ]
+VOLUME /config
+COPY SunGather/config-example.yaml /config/config.yaml
+
+USER sungather
+
+CMD [ "python", "sungather.py", "-c", "/config/config.yaml" ]

README.md

@@ -80,6 +80,10 @@ python3 sungather.py
 docker pull bohdans/sungather
 docker run -v {path to}/config.yaml:/config/config.yaml -e TZ=Australia/Sydney --name sungather bohdans/sungather
 ```
+or if using the http export
+```sh
+docker run -v {path to}/config.yaml:/config/config.yaml -e TZ=Australia/Sydney -p 8080:8080 --name sungather bohdans/sungather
+```
 Note: replace Australia/Sydney with relevant timezone
 <p align="right">(<a href="#top">back to top</a>)</p>
 
@@ -92,6 +96,19 @@ See config-example.py it contains default options and comments.
 If you want to use the new Energy section in Home Assistant, follow the Home Assistant setup below.
 <p align="right">(<a href="#top">back to top</a>)</p>
 
+### Commandline Arguments
+usage: python3 sungather.py [options]
+
+Commandline arguments override any config file settings  
+**-c config.yaml** - Specify config file.  
+**-v 30** - Logging Level, 10 = Debug, 20 = Info, 30 = Warning (default), 40 = Error  
+**--runonce** - Run once then exit  
+**-h** - print this help message and exit (also --help)  
+
+Example:  
+```sh
+python3 sungather.py -c /full/path/config.yaml
+```
 
 ## Exports
 

SunGather/exports/http.py

@@ -11,7 +11,7 @@ class export_http(object):
 
     # Configure HTTP
     def configure(self, config):
-        self.webServer = HTTPServer(('localhost', config.get('port',8080)), MyServer)
+        self.webServer = HTTPServer(('', config.get('port',8080)), MyServer)
         t = Thread(target=self.webServer.serve_forever)
         t.start()
         logging.info("Configured Simple HTTP Server")