chore: clean workflow

.github/workflows/main.yml

@@ -4,8 +4,6 @@ on:
   push:
     branches:
       - master
-    tags:
-      - v*
   pull_request:
 
 jobs:
@@ -16,7 +14,6 @@ jobs:
     env:
       GO_VERSION: 1.17
       GOLANGCI_LINT_VERSION: v1.44.0
-      SEIHON_VERSION: v0.9.0
       CGO_ENABLED: 0
 
     steps:
@@ -59,22 +56,3 @@ jobs:
 
       - name: Make Image
         run: make image
-
-      # Install Docker image multi-arch builder
-      - name: Install seihon ${{ env.SEIHON_VERSION }}
-        if: startsWith(github.ref, 'refs/tags/v')
-        run: |
-          curl -sSfL https://raw.githubusercontent.com/ldez/seihon/master/godownloader.sh | sh -s -- -b $(go env GOPATH)/bin ${SEIHON_VERSION}
-          seihon --version
-
-      - name: Docker Login
-        if: startsWith(github.ref, 'refs/tags/v')
-        env:
-          DOCKER_USERNAME: ${{ secrets.DOCKER_USERNAME }}
-          DOCKER_PASSWORD: ${{ secrets.DOCKER_PASSWORD }}
-        run: |
-          echo "${DOCKER_PASSWORD}" | docker login --username "${DOCKER_USERNAME}" --password-stdin
-
-      - name: Deploy Docker Images (seihon)
-        if: startsWith(github.ref, 'refs/tags/v')
-        run: make publish-images