Update docker-image-arm64.yml

.github/workflows/docker-image-arm64.yml

@@ -8,10 +8,11 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
+      - name: Checkout code
+        uses: actions/checkout@v2
       - name: Build and push ARM64 Docker image
         run: |
           sudo apt update
-          sudo apt upgrade -y
           sudo apt install apt-transport-https ca-certificates curl software-properties-common -y
           curl -fsSL https://download.docker.com/linux/ubuntu/gpg | sudo gpg --dearmor -o /usr/share/keyrings/docker-archive-keyring.gpg
           echo "deb [arch=$(dpkg --print-architecture) signed-by=/usr/share/keyrings/docker-archive-keyring.gpg] https://download.docker.com/linux/ubuntu $(lsb_release -cs) stable" | sudo tee /etc/apt/sources.list.d/docker.list > /dev/null