Switch from Jenkins to Drone

Signed-off-by: Graham <gpe@openrs2.dev>

.drone.yml

@@ -0,0 +1,22 @@
+kind: pipeline
+type: docker
+name: default
+
+steps:
+  - name: build
+    image: registry.openrs2.dev/openrs2-dev
+    commands:
+      - ./gradlew --no-daemon clean build
+
+  - name: deploy
+    image: registry.openrs2.dev/openrs2-dev
+    commands:
+      - ./gradlew --no-daemon publish
+    environment:
+      ORG_GRADLE_PROJECT_openrs2RepoUsername:
+        from_secret: repo_username
+      ORG_GRADLE_PROJECT_openrs2RepoPassword:
+        from_secret: repo_password
+    when:
+      branch:
+        - master

.gitignore

@@ -1,4 +1,5 @@
 .*
+!.drone.yml
 !.editorconfig
 !.git*
 !.idea

Jenkinsfile

@@ -1,30 +0,0 @@
-pipeline {
-    agent any
-
-    stages {
-        stage('Build') {
-            steps {
-                withCredentials([usernamePassword(
-                    credentialsId: 'archiva',
-                    usernameVariable: 'ORG_GRADLE_PROJECT_openrs2RepoUsername',
-                    passwordVariable: 'ORG_GRADLE_PROJECT_openrs2RepoPassword'
-                )]) {
-                    withGradle {
-                        sh './gradlew --no-daemon clean build publish'
-                    }
-                }
-            }
-        }
-    }
-
-    post {
-        always {
-            junit '**/build/test-results/test/*.xml'
-            jacoco(
-                execPattern: '**/build/jacoco/test.exec',
-                classPattern: '**/build/classes/*/main',
-                sourcePattern: '**/src/main'
-            )
-        }
-    }
-}

README.md

@@ -1,6 +1,6 @@
 # OpenRS2
 
-[![Build status badge](https://build.openrs2.dev/buildStatus/icon?job=openrs2&build=lastCompleted)](https://build.openrs2.dev/job/openrs2/)
+[![Build status badge](https://build.openrs2.dev/api/badges/openrs2/openrs2/status.svg)](https://build.openrs2.dev/openrs2/openrs2/)
 
 ## Introduction