diff --git a/.appveyor.yml b/.appveyor.yml
deleted file mode 100644
index 73d7b7e..0000000
--- a/.appveyor.yml
+++ /dev/null
@@ -1,61 +0,0 @@
-version: '{build}'
-image: 'Visual Studio 2017'
-platform: x64
-
-max_jobs: 1
-
-environment:
-  GOPATH: c:\go
-  docker_username:
-    secure: em/TNLUXxG19O/HvbvfJuQ==
-  docker_password:
-    secure: Yo9FJJqihaNz5q8T4Jz8tQ==
-
-branches:
-  only:
-    - master
-
-install:
-  - ps: |
-      docker version
-      go version
-      go env
-
-build_script:
-  - ps: |
-      if ( $env:APPVEYOR_REPO_TAG -eq 'false' ) {
-        $version = $env:APPVEYOR_REPO_COMMIT
-      } else {
-        $version = $env:APPVEYOR_REPO_TAG_NAME
-      }
-      go build -ldflags "-X main.Version=$version" -a -o release/drone-discord.exe .
-
-      docker pull microsoft/nanoserver:10.0.14393.1884
-      docker build -f docker/Dockerfile.windows.amd64 -t appleboy/drone-discord:windows-amd64 .
-
-test_script:
-  - ps: |
-      docker run --rm appleboy/drone-discord:windows-amd64 --version
-
-deploy_script:
-  - ps: |
-      $ErrorActionPreference = 'Stop';
-      if ( $env:APPVEYOR_PULL_REQUEST_NUMBER ) {
-        Write-Host Nothing to deploy.
-      } else {
-        echo $env:DOCKER_PASSWORD | docker login --username $env:DOCKER_USERNAME --password-stdin
-        if ( $env:APPVEYOR_REPO_TAG -eq 'true' ) {
-          $major,$minor,$patch = $env:APPVEYOR_REPO_TAG_NAME.split('.')
-          docker push appleboy/drone-discord:windows-amd64
-          docker tag appleboy/drone-discord:windows-amd64 appleboy/drone-discord:$major.$minor.$patch-windows-amd64
-          docker push appleboy/drone-discord:$major.$minor.$patch-windows-amd64
-          docker tag appleboy/drone-discord:windows-amd64 appleboy/drone-discord:$major.$minor-windows-amd64
-          docker push appleboy/drone-discord:$major.$minor-windows-amd64
-          docker tag appleboy/drone-discord:windows-amd64 appleboy/drone-discord:$major-windows-amd64
-          docker push appleboy/drone-discord:$major-windows-amd64
-        } else {
-          if ( $env:APPVEYOR_REPO_BRANCH -eq 'master' ) {
-            docker push appleboy/drone-discord:windows-amd64
-          }
-        }
-      }
diff --git a/.drone.jsonnet b/.drone.jsonnet
deleted file mode 100644
index d4a7b63..0000000
--- a/.drone.jsonnet
+++ /dev/null
@@ -1,16 +0,0 @@
-local pipeline = import 'pipeline.libsonnet';
-local name = 'drone-discord';
-
-[
-  pipeline.test,
-  pipeline.build(name, 'linux', 'amd64'),
-  pipeline.build(name, 'linux', 'arm64'),
-  pipeline.build(name, 'linux', 'arm'),
-  pipeline.release,
-  pipeline.notifications(depends_on=[
-    'linux-amd64',
-    'linux-arm64',
-    'linux-arm',
-    'release-binary',
-  ]),
-]
diff --git a/.drone.windows.yml b/.drone.windows.yml
deleted file mode 100644
index c1d85dc..0000000
--- a/.drone.windows.yml
+++ /dev/null
@@ -1,76 +0,0 @@
----
-kind: pipeline
-name: windows-amd64
-
-platform:
-  os: windows
-  arch: amd64
-
-steps:
-  - name: build-push
-    pull: always
-    image: golang:1.11
-    commands:
-      - 'go build -v -ldflags "-X main.build=${DRONE_BUILD_NUMBER}" -a -o release/windows/amd64/drone-discord'
-    environment:
-      CGO_ENABLED: 0
-      GO111MODULE: on
-    when:
-      event:
-        - push
-        - pull_request
-
-  - name: build-tag
-    pull: always
-    image: golang:1.11
-    commands:
-      - 'go build -v -ldflags "-X main.version=${DRONE_TAG##v} -X main.build=${DRONE_BUILD_NUMBER}" -a -o release/windows/amd64/drone-discord'
-    environment:
-      CGO_ENABLED: 0
-      GO111MODULE: on
-    when:
-      event:
-        - tag
-
-  - name: executable
-    pull: always
-    image: golang:1.11
-    commands:
-    - ./release/windows/amd64/drone-discord --help
-
-  - name: dryrun
-    pull: always
-    image: plugins/docker:windows-amd64
-    settings:
-      dockerfile: docker/Dockerfile.windows.amd64
-      dry_run: true
-      password:
-        from_secret: docker_password
-      repo: appleboy/drone-discord
-      tags: windows-amd64
-      username:
-        from_secret: docker_username
-    when:
-      event:
-        - pull_request
-
-  - name: publish
-    pull: always
-    image: plugins/docker:windows-amd64
-    settings:
-      auto_tag: true
-      auto_tag_suffix: windows-amd64
-      dockerfile: docker/Dockerfile.windows.amd64
-      password:
-        from_secret: docker_password
-      repo: appleboy/drone-discord
-      username:
-        from_secret: docker_username
-    when:
-      event:
-        - push
-        - tag
-
-trigger:
-  branch:
-    - master
diff --git a/.drone.yml b/.drone.yml
deleted file mode 100644
index cfd0f18..0000000
--- a/.drone.yml
+++ /dev/null
@@ -1,378 +0,0 @@
----
-kind: pipeline
-name: testing
-
-platform:
-  os: linux
-  arch: amd64
-
-steps:
-- name: vet
-  pull: always
-  image: golang:1.16
-  commands:
-  - make vet
-  volumes:
-  - name: gopath
-    path: /go
-
-- name: lint
-  pull: always
-  image: golang:1.16
-  commands:
-  - make lint
-  volumes:
-  - name: gopath
-    path: /go
-
-- name: misspell
-  pull: always
-  image: golang:1.16
-  commands:
-  - make misspell-check
-  volumes:
-  - name: gopath
-    path: /go
-
-- name: test
-  pull: always
-  image: golang:1.16
-  commands:
-  - make test
-  - make coverage
-  environment:
-    WEBHOOK_ID:
-      from_secret: webhook_id
-    WEBHOOK_TOKEN:
-      from_secret: webhook_token
-  volumes:
-  - name: gopath
-    path: /go
-
-- name: codecov
-  pull: always
-  image: robertstettner/drone-codecov
-  settings:
-    token:
-      from_secret: codecov_token
-
-volumes:
-- name: gopath
-  temp: {}
-
----
-kind: pipeline
-name: linux-amd64
-
-platform:
-  os: linux
-  arch: amd64
-
-steps:
-- name: build-push
-  pull: always
-  image: golang:1.16
-  commands:
-  - go build -v -ldflags '-X main.build=${DRONE_BUILD_NUMBER}' -a -o release/linux/amd64/drone-discord
-  environment:
-    CGO_ENABLED: 0
-  when:
-    event:
-      exclude:
-      - tag
-
-- name: build-tag
-  pull: always
-  image: golang:1.16
-  commands:
-  - go build -v -ldflags '-X main.version=${DRONE_TAG##v} -X main.build=${DRONE_BUILD_NUMBER}' -a -o release/linux/amd64/drone-discord
-  environment:
-    CGO_ENABLED: 0
-  when:
-    event:
-    - tag
-
-- name: executable
-  pull: always
-  image: golang:1.16
-  commands:
-  - ./release/linux/amd64/drone-discord --help
-
-- name: dryrun
-  pull: always
-  image: plugins/docker:linux-amd64
-  settings:
-    cache_from: appleboy/drone-discord
-    dockerfile: docker/Dockerfile.linux.amd64
-    dry_run: true
-    repo: appleboy/drone-discord
-    tags: linux-amd64
-  when:
-    event:
-    - pull_request
-
-- name: publish
-  pull: always
-  image: plugins/docker:linux-amd64
-  settings:
-    auto_tag: true
-    auto_tag_suffix: linux-amd64
-    cache_from: appleboy/drone-discord
-    daemon_off: false
-    dockerfile: docker/Dockerfile.linux.amd64
-    password:
-      from_secret: docker_password
-    repo: appleboy/drone-discord
-    username:
-      from_secret: docker_username
-  when:
-    event:
-      exclude:
-      - pull_request
-
-trigger:
-  ref:
-  - refs/heads/master
-  - refs/pull/**
-  - refs/tags/**
-
-depends_on:
-- testing
-
----
-kind: pipeline
-name: linux-arm64
-
-platform:
-  os: linux
-  arch: arm64
-
-steps:
-- name: build-push
-  pull: always
-  image: golang:1.16
-  commands:
-  - go build -v -ldflags '-X main.build=${DRONE_BUILD_NUMBER}' -a -o release/linux/arm64/drone-discord
-  environment:
-    CGO_ENABLED: 0
-  when:
-    event:
-      exclude:
-      - tag
-
-- name: build-tag
-  pull: always
-  image: golang:1.16
-  commands:
-  - go build -v -ldflags '-X main.version=${DRONE_TAG##v} -X main.build=${DRONE_BUILD_NUMBER}' -a -o release/linux/arm64/drone-discord
-  environment:
-    CGO_ENABLED: 0
-  when:
-    event:
-    - tag
-
-- name: executable
-  pull: always
-  image: golang:1.16
-  commands:
-  - ./release/linux/arm64/drone-discord --help
-
-- name: dryrun
-  pull: always
-  image: plugins/docker:linux-arm64
-  settings:
-    cache_from: appleboy/drone-discord
-    dockerfile: docker/Dockerfile.linux.arm64
-    dry_run: true
-    repo: appleboy/drone-discord
-    tags: linux-arm64
-  when:
-    event:
-    - pull_request
-
-- name: publish
-  pull: always
-  image: plugins/docker:linux-arm64
-  settings:
-    auto_tag: true
-    auto_tag_suffix: linux-arm64
-    cache_from: appleboy/drone-discord
-    daemon_off: false
-    dockerfile: docker/Dockerfile.linux.arm64
-    password:
-      from_secret: docker_password
-    repo: appleboy/drone-discord
-    username:
-      from_secret: docker_username
-  when:
-    event:
-      exclude:
-      - pull_request
-
-trigger:
-  ref:
-  - refs/heads/master
-  - refs/pull/**
-  - refs/tags/**
-
-depends_on:
-- testing
-
----
-kind: pipeline
-name: linux-arm
-
-platform:
-  os: linux
-  arch: arm
-
-steps:
-- name: build-push
-  pull: always
-  image: golang:1.16
-  commands:
-  - go build -v -ldflags '-X main.build=${DRONE_BUILD_NUMBER}' -a -o release/linux/arm/drone-discord
-  environment:
-    CGO_ENABLED: 0
-  when:
-    event:
-      exclude:
-      - tag
-
-- name: build-tag
-  pull: always
-  image: golang:1.16
-  commands:
-  - go build -v -ldflags '-X main.version=${DRONE_TAG##v} -X main.build=${DRONE_BUILD_NUMBER}' -a -o release/linux/arm/drone-discord
-  environment:
-    CGO_ENABLED: 0
-  when:
-    event:
-    - tag
-
-- name: executable
-  pull: always
-  image: golang:1.16
-  commands:
-  - ./release/linux/arm/drone-discord --help
-
-- name: dryrun
-  pull: always
-  image: plugins/docker:linux-arm
-  settings:
-    cache_from: appleboy/drone-discord
-    dockerfile: docker/Dockerfile.linux.arm
-    dry_run: true
-    repo: appleboy/drone-discord
-    tags: linux-arm
-  when:
-    event:
-    - pull_request
-
-- name: publish
-  pull: always
-  image: plugins/docker:linux-arm
-  settings:
-    auto_tag: true
-    auto_tag_suffix: linux-arm
-    cache_from: appleboy/drone-discord
-    daemon_off: false
-    dockerfile: docker/Dockerfile.linux.arm
-    password:
-      from_secret: docker_password
-    repo: appleboy/drone-discord
-    username:
-      from_secret: docker_username
-  when:
-    event:
-      exclude:
-      - pull_request
-
-trigger:
-  ref:
-  - refs/heads/master
-  - refs/pull/**
-  - refs/tags/**
-
-depends_on:
-- testing
-
----
-kind: pipeline
-name: release-binary
-
-platform:
-  os: linux
-  arch: amd64
-
-steps:
-- name: build-all-binary
-  pull: always
-  image: golang:1.16
-  commands:
-  - make release
-  when:
-    event:
-    - tag
-
-- name: deploy-all-binary
-  pull: always
-  image: plugins/github-release
-  settings:
-    api_key:
-      from_secret: github_release_api_key
-    files:
-    - dist/release/*
-  when:
-    event:
-    - tag
-
-trigger:
-  ref:
-  - refs/tags/**
-
-depends_on:
-- testing
-
----
-kind: pipeline
-name: notifications
-
-platform:
-  os: linux
-  arch: amd64
-
-steps:
-- name: discord
-  pull: always
-  image: appleboy/drone-discord
-  settings:
-    message: "{{#success build.status}} ✅  Build #{{build.number}} of `{{repo.name}}` succeeded.\n\n📝 Commit by {{commit.author}} on `{{commit.branch}}`:\n``` {{commit.message}} ```\n🌐 {{ build.link }}\n\n ✅ duration: {{duration build.started build.finished}} \n\n ✅ started: {{datetime build.started \"2006/01/02 15:04\" \"Asia/Taipei\"}} \n\n ✅ finished: {{datetime build.finished \"2006/01/02 15:04\" \"Asia/Taipei\"}} {{else}} ❌  Build #{{build.number}} of `{{repo.name}}` failed.\n\n📝 Commit by {{commit.author}} on `{{commit.branch}}`:\n``` {{commit.message}} ```\n🌐 {{ build.link }}\n\n ✅ duration: {{duration build.started build.finished}} \n\n ✅ started: {{datetime build.started \"2006/01/02 15:04\" \"Asia/Taipei\"}} \n\n ✅ finished: {{datetime build.finished \"2006/01/02 15:04\" \"Asia/Taipei\"}}{{/success}}\n"
-    webhook_id:
-      from_secret: webhook_id
-    webhook_token:
-      from_secret: webhook_token
-
-- name: manifest
-  pull: always
-  image: plugins/manifest
-  settings:
-    ignore_missing: true
-    password:
-      from_secret: docker_password
-    spec: docker/manifest.tmpl
-    username:
-      from_secret: docker_username
-
-trigger:
-  ref:
-  - refs/heads/master
-  - refs/tags/**
-
-depends_on:
-- linux-amd64
-- linux-arm64
-- linux-arm
-- release-binary
-
-...
diff --git a/.revive.toml b/.revive.toml
deleted file mode 100644
index 74743d5..0000000
--- a/.revive.toml
+++ /dev/null
@@ -1,25 +0,0 @@
-ignoreGeneratedHeader = false
-severity = "warning"
-confidence = 0.8
-errorCode = 1
-warningCode = 1
-
-[rule.blank-imports]
-[rule.context-as-argument]
-[rule.context-keys-type]
-[rule.dot-imports]
-[rule.error-return]
-[rule.error-strings]
-[rule.error-naming]
-[rule.exported]
-[rule.if-return]
-[rule.increment-decrement]
-[rule.var-naming]
-[rule.var-declaration]
-[rule.package-comments]
-[rule.range]
-[rule.receiver-naming]
-[rule.time-naming]
-[rule.unexported-return]
-[rule.indent-error-flow]
-[rule.errorf]
diff --git a/pipeline.libsonnet b/pipeline.libsonnet
deleted file mode 100644
index 4a67e67..0000000
--- a/pipeline.libsonnet
+++ /dev/null
@@ -1,268 +0,0 @@
-{
-  test:: {
-    kind: 'pipeline',
-    name: 'testing',
-    platform: {
-      os: 'linux',
-      arch: 'amd64',
-    },
-    steps: [
-      {
-        name: 'vet',
-        image: 'golang:1.16',
-        pull: 'always',
-        commands: [
-          'make vet',
-        ],
-        volumes: [
-          {
-            name: 'gopath',
-            path: '/go',
-          },
-        ],
-      },
-      {
-        name: 'lint',
-        image: 'golang:1.16',
-        pull: 'always',
-        commands: [
-          'make lint',
-        ],
-        volumes: [
-          {
-            name: 'gopath',
-            path: '/go',
-          },
-        ],
-      },
-      {
-        name: 'misspell',
-        image: 'golang:1.16',
-        pull: 'always',
-        commands: [
-          'make misspell-check',
-        ],
-        volumes: [
-          {
-            name: 'gopath',
-            path: '/go',
-          },
-        ],
-      },
-      {
-        name: 'test',
-        image: 'golang:1.16',
-        pull: 'always',
-        environment: {
-          WEBHOOK_ID: { 'from_secret': 'webhook_id' },
-          WEBHOOK_TOKEN: { 'from_secret': 'webhook_token' },
-        },
-        commands: [
-          'make test',
-          'make coverage',
-        ],
-        volumes: [
-          {
-            name: 'gopath',
-            path: '/go',
-          },
-        ],
-      },
-      {
-        name: 'codecov',
-        image: 'robertstettner/drone-codecov',
-        pull: 'always',
-        settings: {
-          token: { 'from_secret': 'codecov_token' },
-        },
-      },
-    ],
-    volumes: [
-      {
-        name: 'gopath',
-        temp: {},
-      },
-    ],
-  },
-
-  build(name, os='linux', arch='amd64'):: {
-    kind: 'pipeline',
-    name: os + '-' + arch,
-    platform: {
-      os: os,
-      arch: arch,
-    },
-    steps: [
-      {
-        name: 'build-push',
-        image: 'golang:1.16',
-        pull: 'always',
-        environment: {
-          CGO_ENABLED: '0',
-        },
-        commands: [
-          'go build -v -ldflags \'-X main.build=${DRONE_BUILD_NUMBER}\' -a -o release/' + os + '/' + arch + '/' + name,
-        ],
-        when: {
-          event: {
-            exclude: [ 'tag' ],
-          },
-        },
-      },
-      {
-        name: 'build-tag',
-        image: 'golang:1.16',
-        pull: 'always',
-        environment: {
-          CGO_ENABLED: '0',
-        },
-        commands: [
-          'go build -v -ldflags \'-X main.version=${DRONE_TAG##v} -X main.build=${DRONE_BUILD_NUMBER}\' -a -o release/' + os + '/' + arch + '/' + name,
-        ],
-        when: {
-          event: [ 'tag' ],
-        },
-      },
-      {
-        name: 'executable',
-        image: 'golang:1.16',
-        pull: 'always',
-        commands: [
-          './release/' + os + '/' + arch + '/' + name + ' --help',
-        ],
-      },
-      {
-        name: 'dryrun',
-        image: 'plugins/docker:' + os + '-' + arch,
-        pull: 'always',
-        settings: {
-          daemon_off: false,
-          dry_run: true,
-          tags: os + '-' + arch,
-          dockerfile: 'docker/Dockerfile.' + os + '.' + arch,
-          repo: 'appleboy/' + name,
-          cache_from: 'appleboy/' + name,
-        },
-        when: {
-          event: [ 'pull_request' ],
-        },
-      },
-      {
-        name: 'publish',
-        image: 'plugins/docker:' + os + '-' + arch,
-        pull: 'always',
-        settings: {
-          daemon_off: 'false',
-          auto_tag: true,
-          auto_tag_suffix: os + '-' + arch,
-          dockerfile: 'docker/Dockerfile.' + os + '.' + arch,
-          repo: 'appleboy/' + name,
-          cache_from: 'appleboy/' + name,
-          username: { 'from_secret': 'docker_username' },
-          password: { 'from_secret': 'docker_password' },
-        },
-        when: {
-          event: {
-            exclude: [ 'pull_request' ],
-          },
-        },
-      },
-    ],
-    depends_on: [
-      'testing',
-    ],
-    trigger: {
-      ref: [
-        'refs/heads/master',
-        'refs/pull/**',
-        'refs/tags/**',
-      ],
-    },
-  },
-
-  release:: {
-    kind: 'pipeline',
-    name: 'release-binary',
-    platform: {
-      os: 'linux',
-      arch: 'amd64',
-    },
-    steps: [
-      {
-        name: 'build-all-binary',
-        image: 'golang:1.16',
-        pull: 'always',
-        commands: [
-          'make release'
-        ],
-        when: {
-          event: [ 'tag' ],
-        },
-      },
-      {
-        name: 'deploy-all-binary',
-        image: 'plugins/github-release',
-        pull: 'always',
-        settings: {
-          files: [ 'dist/release/*' ],
-          api_key: { 'from_secret': 'github_release_api_key' },
-        },
-        when: {
-          event: [ 'tag' ],
-        },
-      },
-    ],
-    depends_on: [
-      'testing',
-    ],
-    trigger: {
-      ref: [
-        'refs/tags/**',
-      ],
-    },
-  },
-
-  notifications(os='linux', arch='amd64', depends_on=[]):: {
-    kind: 'pipeline',
-    name: 'notifications',
-    platform: {
-      os: os,
-      arch: arch,
-    },
-    steps: [
-      {
-        name: 'discord',
-        image: 'appleboy/drone-discord',
-        pull: 'always',
-        settings: {
-          webhook_id: { from_secret: 'webhook_id' },
-          webhook_token: { from_secret: 'webhook_token' },
-          message: '{{#success build.status}} ✅  Build #{{build.number}} of `{{repo.name}}` succeeded.\n\n📝 Commit by {{commit.author}} on `{{commit.branch}}`:\n``` {{commit.message}} ```\n🌐 {{ build.link }}\n\n ✅ duration: {{duration build.started build.finished}} \n\n ✅ started: {{datetime build.started "2006/01/02 15:04" "Asia/Taipei"}} \n\n ✅ finished: {{datetime build.finished "2006/01/02 15:04" "Asia/Taipei"}} {{else}} ❌  Build #{{build.number}} of `{{repo.name}}` failed.\n\n📝 Commit by {{commit.author}} on `{{commit.branch}}`:\n``` {{commit.message}} ```\n🌐 {{ build.link }}\n\n ✅ duration: {{duration build.started build.finished}} \n\n ✅ started: {{datetime build.started "2006/01/02 15:04" "Asia/Taipei"}} \n\n ✅ finished: {{datetime build.finished "2006/01/02 15:04" "Asia/Taipei"}}{{/success}}\n',
-        },
-      },
-      {
-        name: 'manifest',
-        image: 'plugins/manifest',
-        pull: 'always',
-        settings: {
-          username: { from_secret: 'docker_username' },
-          password: { from_secret: 'docker_password' },
-          spec: 'docker/manifest.tmpl',
-          ignore_missing: true,
-        },
-      },
-    ],
-    depends_on: depends_on,
-    trigger: {
-      ref: [
-        'refs/heads/master',
-        'refs/tags/**',
-      ],
-    },
-  },
-
-  signature(key):: {
-    kind: 'signature',
-    hmac: key,
-  }
-}