added drone config

.drone.yml

@@ -0,0 +1,144 @@
+---
+kind: pipeline
+type: docker
+name: cleanup-before
+
+steps:
+  - name: clean
+    image: alpine
+    commands:
+      - rm -rf /build/*
+    volumes:
+      - name: build
+        path: /build
+    when:
+      event: tag
+
+volumes:
+  - name: build
+    host:
+      path: /tmp/adradius/build
+
+---
+kind: pipeline
+type: docker
+name: default-linux-amd64
+
+steps:
+  - name: build
+    image: golang
+    commands:
+      - ./ci-build.sh build
+    environment:
+      GOOS: linux
+      GOARCH: amd64
+    volumes:
+      - name: build
+        path: /build
+
+volumes:
+  - name: build
+    host:
+      path: /tmp/adradius/build
+
+depends_on:
+  - cleanup-before
+
+---
+kind: pipeline
+type: docker
+name: default-linux-arm64
+
+steps:
+  - name: build
+    image: golang
+    commands:
+      - ./ci-build.sh build
+    environment:
+      GOOS: linux
+      GOARCH: arm64
+    volumes:
+      - name: build
+        path: /build
+
+volumes:
+  - name: build
+    host:
+      path: /tmp/adradius/build
+
+depends_on:
+  - cleanup-before
+
+---
+kind: pipeline
+type: docker
+name: gitea-release
+
+steps:
+  - name: move
+    image: alpine
+    commands:
+      - mv build/* ./
+    volumes:
+      - name: build
+        path: /drone/src/build
+    when:
+      event: tag
+  - name: release
+    image: plugins/gitea-release
+    settings:
+      base_url: https://git.paulbsd.com
+      api_key:
+        from_secret: gitea_token
+      files: "*.tar.gz"
+      checksum:
+        - sha256
+        - sha512
+      title: VERSION
+    volumes:
+      - name: build
+        path: /drone/src/build
+    when:
+      event: tag
+  - name: ls
+    image: alpine
+    commands:
+      - find .
+    volumes:
+      - name: build
+        path: /drone/src/build
+    when:
+      event: tag
+
+volumes:
+  - name: build
+    host:
+      path: /tmp/adradius/build
+
+depends_on:
+  - default-linux-amd64
+  - default-linux-arm64
+
+---
+kind: pipeline
+type: docker
+name: cleanup-after
+
+steps:
+  - name: clean
+    image: alpine
+    commands:
+      - rm -rf /build/*
+    volumes:
+      - name: build
+        path: /build
+    when:
+      event: tag
+
+volumes:
+  - name: build
+    host:
+      path: /tmp/adradius/build
+
+depends_on:
+  - gitea-release