README.md

@@ -56,32 +56,22 @@ To be able to build and run the Java Spring Boot application, you need the follo
   (JDK 17.x will be automatically installed by Gradle toolchain support)
 - Gradle in some not too outdated version (7.4 will be installed via wrapper)
 
-For Ubuntu 22.02:
-
-    sudo apt install -y openjdk-17-jdk
-    # see https://gradle.org/releases/ for direct link to current release 7.2.6
-    export VERSION=7.2.6
-    wget https://services.gradle.org/distributions/gradle-7.2.6-bin.zip?-.... -O gradle-${VERSION}-bin.zip
-    sudo unzip -d /opt/gradle gradle-${VERSION}-bin.zip
-    cd /opt/gradle && sudo ln -s gradle-${VERSION} latest && cd -
-    sudo nano /etc/profile.d/gradle.sh
-      export GRADLE_HOME=/opt/gradle/latest
-      export PATH=${GRADLE_HOME}/bin:${PATH}
-    sudo chmod +x /etc/profile.d/gradle.sh
-    source /etc/profile.d/gradle.sh
-
 You also might need an IDE (e.g. *IntelliJ IDEA* or *Eclipse* or *VS Code* with *[STS](https://spring.io/tools)* and a GUI Frontend for *PostgreSQL* like *Postbird*.
 
 If you have at least Docker, the Java JDK and Gradle installed in appropriate versions and in your `PATH`, then you can start like this:
 
     cd your-hsadmin-ng-directory
     
-    gradle wrapper  # downloads the configured Gradle version into the project
+    ./gradlew  # downloads the configured Gradle version into the project
     source .aliases # creates some comforable bash aliases, e.g. 'gw'='./gradlew'
 
     gw test         # compiles and runs unit- and integration-tests
     
+    # if the container has not been built yet, run this:
     pg-sql-run      # downloads + runs PostgreSQL in a Docker container on localhost:5432
+    # if the container has been built already, run this:
+    docker start hsadmin-ng-postgres
+
     gw bootRun      # compiles and runs the application on localhost:8080
 
     # the following command should reply with "pong":