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>

Dockerfile

@@ -10,9 +10,7 @@ RUN mvn clean install
 
 FROM openjdk:11.0-jre
 
-ENV JAVA_OPTS "-Xmx1g -Xms1g -Ddw.server.application_connectors[0].bind_host=0.0.0.0 -Ddw.server.application_connectors[0].port=8989"
-
-ENV TOOL_OPTS "-Ddw.graphhopper.datareader.file=europe_germany_berlin.pbf -Ddw.graphhopper.graph.location=default-gh"
+ENV JAVA_OPTS "-Xmx1g -Xms1g"
 
 RUN mkdir -p /data
 
@@ -22,10 +20,12 @@ COPY --from=build /graphhopper/web/target/graphhopper*.jar ./
 
 COPY ./config-example.yml ./
 
+COPY --chmod=0755 ./graphhopper.sh ./
+
 VOLUME [ "/data" ]
 
 EXPOSE 8989
 
 HEALTHCHECK --interval=5s --timeout=3s CMD curl --fail http://localhost:8989/health || exit 1
 
-ENTRYPOINT [ "java $JAVA_OPTS $TOOL_OPTS -jar *.jar", "server config-example.yml" ]
+ENTRYPOINT [ "graphhopper.sh", "-c", "config-example.yml" ]