use distroless docker image

Dockerfile

@@ -1,8 +1,8 @@
 FROM gcr.io/distroless/java21-debian12
 WORKDIR /app
-COPY build/install/* /
+COPY build/libs/app-*.jar app.jar
 ENV JAVA_OPTS="-Dlogback.configurationFile=logback.xml"
 ENV TZ="Europe/Oslo"
 EXPOSE 8080
 USER nonroot
-CMD ["docker-kotlin-gradle-ktor-postgres"]
+CMD [ "app.jar" ]

README.md

@@ -24,14 +24,38 @@ You can check which version you have installed using this command:
 java -version
 ```
 
+Make sure you have the Docker installed
+You can check which version you have installed using this command:
+``` bash
+docker --version
+```
+
+Make sure you have the Docker-compose installed
+You can check which version you have installed using this command:
+``` bash
+docker-compose --version
+```
+
 ### Running the application locally
 
 #### Building the application
 To build locally and run the integration tests you can simply run
 ``` bash
-./gradlew clean build installDist
+./gradlew shadowJar
+```
+or on windows `gradlew.bat shadowJar`
+
+
+#### Creating a docker image
+Creating a docker image should be as simple as
+``` bash
+docker build -t docker-kotlin-gradle-ktor-postgres .
+```
+
+#### Running a docker image
+``` bash
+docker run -d --rm -it -p 8080:8080 -e "DATABASE_HOST_URL=db" docker-kotlin-gradle-ktor-postgres
 ```
-or on windows `gradlew.bat clean build installDist`
 
 #### Integrasion testing the application
 ### Running the postgresSql db from docker compose
@@ -75,17 +99,6 @@ run this command:
 ./gradlew wrapper --gradle-version latest
 ```
 
-#### Creating a docker image
-Creating a docker image should be as simple as
-``` bash
-docker build -t docker-kotlin-gradle-ktor-postgres .
-```
-
-#### Running a docker image
-``` bash
-docker run -d --rm -it -p 8080:8080 -e "DATABASE_HOST_URL=db" docker-kotlin-gradle-ktor-postgres
-```
-
 ### Contribute
 Want to add a feature? see [CONTRIBUTING](CONTRIBUTING.md)
 

build.gradle.kts

@@ -23,6 +23,7 @@ plugins {
     id("application")
     kotlin("jvm") version "2.0.20"
     id("com.diffplug.spotless") version "6.25.0"
+    id("com.gradleup.shadow") version "8.3.0"
 }
 
 application {
@@ -82,6 +83,20 @@ kotlin {
 }
 
 tasks {
+
+    shadowJar {
+        archiveBaseName.set("app")
+        archiveClassifier.set("")
+        isZip64 = true
+        manifest {
+            attributes(
+                mapOf(
+                    "Main-Class" to "io.github.mikaojk.ApplicationKt",
+                ),
+            )
+        }
+    }
+
     test {
         useJUnitPlatform {}
         testLogging {