diff --git a/.github/workflows/dockerimage.yml b/.github/workflows/dockerimage.yml
new file mode 100644
index 0000000000..abc2ca2e11
--- /dev/null
+++ b/.github/workflows/dockerimage.yml
@@ -0,0 +1,14 @@
+name: Docker Image CI
+
+on: [push]
+
+jobs:
+
+  build:
+
+    runs-on: ubuntu-latest
+
+    steps:
+    - uses: actions/checkout@v2
+    - name: Build the Docker image
+      run: docker build . --file Dockerfile --tag my-image-name:$(date +%s)
diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
deleted file mode 100644
index 3e9585f96d..0000000000
--- a/.github/workflows/test.yml
+++ /dev/null
@@ -1,118 +0,0 @@
-name: Test
-
-on:
-  push:
-    branches:
-      - master
-      - develop
-  pull_request:
-
-jobs:
-  mocha:
-    runs-on: ubuntu-latest
-
-    strategy:
-      matrix:
-        node-version: [16.x]
-
-    services:
-      postgres:
-        image: postgres:13
-        ports:
-          - 54312:5432
-        env:
-          POSTGRES_DB: test-misskey
-          POSTGRES_HOST_AUTH_METHOD: trust
-      redis:
-        image: redis:6
-        ports:
-          - 56312:6379
-
-    steps:
-    - uses: actions/checkout@v2
-      with:
-        submodules: true
-    - name: Use Node.js ${{ matrix.node-version }}
-      uses: actions/setup-node@v1
-      with:
-        node-version: ${{ matrix.node-version }}
-    - name: Install dependencies
-      run: yarn install
-    - name: Check yarn.lock
-      run: git diff --exit-code yarn.lock
-    - name: Copy Configure
-      run: cp .github/misskey/test.yml .config
-    - name: Build
-      run: yarn build
-    - name: Test
-      run: yarn mocha
-
-  e2e:
-    runs-on: ubuntu-latest
-
-    strategy:
-      fail-fast: false
-      matrix:
-        node-version: [16.x]
-        browser: [chrome]
-
-    services:
-      postgres:
-        image: postgres:13
-        ports:
-          - 54312:5432
-        env:
-          POSTGRES_DB: test-misskey
-          POSTGRES_HOST_AUTH_METHOD: trust
-      redis:
-        image: redis:6
-        ports:
-          - 56312:6379
-
-    steps:
-    - uses: actions/checkout@v2
-      with:
-        submodules: true
-    # https://github.com/cypress-io/cypress-docker-images/issues/150
-    #- name: Install mplayer for FireFox
-    #  run: sudo apt install mplayer -y
-    #  if: ${{ matrix.browser == 'firefox' }}
-    #- uses: browser-actions/setup-firefox@latest
-    #  if: ${{ matrix.browser == 'firefox' }}
-    - name: Use Node.js ${{ matrix.node-version }}
-      uses: actions/setup-node@v1
-      with:
-        node-version: ${{ matrix.node-version }}
-    - uses: actions/cache@v2
-      with:
-        path: '**/node_modules'
-        key: ${{ runner.os }}-modules-${{ hashFiles('**/yarn.lock') }}
-    - name: Install dependencies
-      run: yarn install
-    - name: Check yarn.lock
-      run: git diff --exit-code yarn.lock
-    - name: Copy Configure
-      run: cp .github/misskey/test.yml .config
-    - name: Build
-      run: yarn build
-    # https://github.com/cypress-io/cypress/issues/4351#issuecomment-559489091
-    - name: ALSA Env
-      run: echo -e 'pcm.!default {\n type hw\n card 0\n}\n\nctl.!default {\n type hw\n card 0\n}' > ~/.asoundrc
-    - name: Cypress run
-      uses: cypress-io/github-action@v2
-      with:
-        install: false
-        start: npm run start:test
-        wait-on: 'http://localhost:61812'
-        headless: false
-        browser: ${{ matrix.browser }}
-    - uses: actions/upload-artifact@v2
-      if: failure()
-      with:
-        name: ${{ matrix.browser }}-cypress-screenshots
-        path: cypress/screenshots
-    - uses: actions/upload-artifact@v2
-      if: always()
-      with:
-        name: ${{ matrix.browser }}-cypress-videos
-        path: cypress/videos