Use credentials from docker login

.drone.yml

@@ -49,13 +49,16 @@ clone:
 steps:
   - name: build Docker container
     image: gradle:8.2-jdk17
+    environment:
+      USERNAME:
+        from_secret: docker_username
+      PASSWORD:
+        from_secret: docker_password
     volumes:
       - name: cache
         path: /home/gradle/.gradle
     commands:
-      - wget https://github.com/docker/docker-credential-helpers/releases/download/v0.8.0/docker-credential-pass-v0.8.0.linux-arm64
-      - mv docker-credential-pass-v0.8.0.linux-arm64 docker-credential-pass
-      - chmod +x ./docker-credential-pass
+      - docker login -u $USERNAME -p $PASSWORD
       - ./gradlew jib
 
 volumes:

module-deploy/deploy.gradle.kts

@@ -6,9 +6,6 @@ dependencies {
     implementation(project(":server"))
 }
 
-val dockerUsername = System.getenv("DOCKER_USERNAME") ?: "UNKNOWN"
-val dockerPassword = System.getenv("DOCKER_PASSWORD") ?: "UNKNOWN"
-
 jib {
     from {
         image = "amazoncorretto:" + properties["projectSourceCompatibility"]
@@ -28,9 +25,6 @@ jib {
         tags = setOf(
                 "latest",
                 properties["version"].toString().replace("+", "-"))
-        credHelper {
-            helper = "pass"
-        }
     }
     container {
         extraClasspath = listOf("/configmap")