Update README.md

README.md

@@ -151,6 +151,9 @@ jobs:
   multi-builders:
     runs-on: ubuntu-latest
     steps:
+      -
+        name: Checkout
+        uses: actions/checkout@v2
       -
         uses: docker/setup-buildx-action@v1
         id: builder1
@@ -240,6 +243,9 @@ jobs:
         ports:
           - 5000:5000
     steps:
+      -
+        name: Checkout
+        uses: actions/checkout@v2
       -
         name: Set up QEMU
         uses: docker/setup-qemu-action@v1
@@ -276,6 +282,9 @@ jobs:
   github-cache:
     runs-on: ubuntu-latest
     steps:
+      -
+        name: Checkout
+        uses: actions/checkout@v2
       -
         name: Set up Docker Buildx
         uses: docker/setup-buildx-action@v1
@@ -422,6 +431,9 @@ jobs:
   main:
     runs-on: ubuntu-latest
     steps:
+      -
+        name: Checkout
+        uses: actions/checkout@v2
       -
         name: Set up QEMU
         uses: docker/setup-qemu-action@v1