added ci

.drone.yml

@@ -0,0 +1,51 @@
+---
+kind: pipeline
+type: docker
+name: default-linux-amd64
+
+steps:
+  - name: build
+    image: golang
+    commands:
+      - ./ci-build.sh build
+    environment:
+      GOOS: linux
+      GOARCH: amd64
+  - 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
+    when:
+      event: tag
+
+---
+kind: pipeline
+type: docker
+name: default-linux-arm64
+
+steps:
+  - name: build
+    image: golang
+    commands:
+      - ./ci-build.sh build
+    environment:
+      GOOS: linux
+      GOARCH: arm64
+  - 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
+    when:
+      event: tag

ci-build.sh

@@ -0,0 +1,44 @@
+#!/bin/bash
+
+PROJECTNAME=g2g
+RELEASENAME=${PROJECTNAME}
+VERSION="0"
+
+GOOPTIONS="-mod=vendor"
+SRCFILES=cmd/g2g/*.go
+
+build() {
+  if [[ ! -z $DRONE_TAG ]]
+  then
+    VERSION=$DRONE_TAG
+  elif [[ ! -z $DRONE_TAG ]]
+  then
+    VERSION=$DRONE_COMMIT
+  fi
+
+  if [[ ! -z $VERSION && ! -z $GOOS && ! -z $GOARCH ]]
+  then
+    RELEASENAME=${PROJECTNAME}-${VERSION}-${GOOS}-${GOARCH}
+  fi
+  go build -o ${PROJECTNAME} ${GOOPTIONS} ${SRCFILES}
+  if [[ ! -z $DRONE_TAG ]]
+  then
+    tar -czvf ${RELEASENAME}.tar.gz ${PROJECTNAME}
+  fi
+  rm ${PROJECTNAME}
+}
+
+clean() {
+  rm -rf $RELEASEDIR
+}
+
+case $1 in
+  "build")
+    build
+  ;;
+  "clean")
+    clean
+  ;;
+  *)
+  ;;
+esac