environment variable for hostname

README.md

@@ -26,17 +26,20 @@ The application is now runnable using `java -jar target/quarkus-app/quarkus-run.
 
 ### Creating a native executable
 
-You can create a native executable using: 
-```shell script
-./mvnw package -Pnative
-```
-
-Or, if you don't have GraalVM installed, you can run the native executable build in a container using: 
+You can create a native executable with no GraalVM installed: 
 ```shell script
 ./mvnw package -Pnative -Dquarkus.native.container-build=true
 ```
 
-You can then execute your native executable with: `./target/buerokalender-0.1.0-SNAPSHOT-runner`
+...and execute it: 
+```shell script
+export POSTGRES_HOST=localhost
+export POSTGRES_PORT=5432 
+export POSTGRES_USER=buerokalender
+export POSTGRES_PASSWORD=buerokalender
+
+target/buerokalender-1.1.0-runner
+```
 
 Push to docker.io:
 ```shell script

src/main/resources/application.properties

@@ -1,5 +1,5 @@
 # Database
-%prod.quarkus.datasource.jdbc.url = jdbc:postgresql://db:${POSTGRES_PORT:5432}/buerokalender
+%prod.quarkus.datasource.jdbc.url = jdbc:postgresql://${POSTGRES_HOST:db}:${POSTGRES_PORT:5432}/buerokalender
 %prod.quarkus.datasource.username = ${POSTGRES_USER:buerokalender}
 %prod.quarkus.datasource.password = ${POSTGRES_PASSWORD:buerokalender}
 %prod.quarkus.datasource.jdbc.max-size=16