Simplify and add url to graphhopper.sh (#14)

Fixes #11 Fixes #12

* All relevant changes

* Code review comments

* Small changes

* Code review fix

* Run the server as default action

* Remove unneeded commands from dockerfile

* Update graphhopper.sh

Adjust usage text
Use `exit 2` for usage errors

* Update README.md

Update the default JAVA_OPTS value according to the Dockerfile

* Add execute permissions

* Fix extra "

* Fix missing space

* Remove unwanted spaces

* Update README.md

Co-authored-by: zstadler <zeev.stadler@gmail.com>

README.md

@@ -3,26 +3,32 @@ This repository holds the very basic things in order to make sure there's an upd
 Images can be found here:
 https://hub.docker.com/r/israelhikingmap/graphhopper
 
-I would like to first and foremost thank the [graphhopper](https://www.graphhopper.com/) team for their hard work and amazing product!
-They are doing a great job and we are truly happy to help by contributing to thier code base like we had done in the past.
+I would like to first and foremost thank the [graphhopper](https://www.graphhopper.com/) team for their hard work and amazing product!
+They are doing a great job and we are truly happy to help by contributing to thier code base like we had done in the past.
 Graphhopper team has decided not to build a docker image and this repository is here to bridge that gap.
-This repository is extremely simple, all it does is the following:
+This repository is extremely simple, all it does is the following:
 1. Every night at 1 AM it builds the latest code using Github actions from the [graphhopper repository](https://github.com/graphhopper/graphhopper) and uploads the image to docker hub with the `latest` tag
 2. It checks if there's a new version tag, and if so builds it and upload it as well with the relevant tag
+3. Adds a graphhopper.sh file for ease of use
 
 That's all.
 
 Feel free to submit issues or pull requests if you would like to improve the code here
 
-In order to use this image there are two environment variables you need to pass to docker:
+This docker image uses the following default environment setting:
 ```
-JAVA_OPTS: "-Xmx1g -Xms1g -Ddw.server.application_connectors[0].bind_host=0.0.0.0 -Ddw.server.application_connectors[0].port=8989"
-TOOL_OPTS: "-Ddw.graphhopper.datareader.file=file-location-inside-docker.pbf -Ddw.graphhopper.graph.location=default-gh"
+JAVA_OPTS: "-Xmx1g -Xms1g"
 ```
 
-Without the `TOOL_OPTS` this image won't run!
+For a quick startup you can run the following command to create the andorra routing:
+```
+docker run -p 8989:8989 israelhikingmap/graphhopper --url https://download.geofabrik.de/europe/andorra-latest.osm.pbf --host 0.0.0.0
+```
+Then surf to `http://loaclhost:8989/`
 
 You can also completely override the entry point and use this for example:
 ```
 docker run --entrypoint /bin/bash israelhikingmap/graphhopper -c "wget https://download.geofabrik.de/europe/germany/berlin-latest.osm.pbf -O /data/berlin.osm.pbf && java -Ddw.graphhopper.datareader.file=/data/berlin.osm.pbf -Ddw.graphhopper.graph.location=berlin-gh -jar *.jar server config-example.yml"
 ```
+
+Checkout `graphhopper.sh` for more usage options such as import.