Merge pull request #3299 from apostasie/dev-binfmt

Ensure binfmt does install emulation for arm7 on the CI

Author: AkihiroSuda

.github/workflows/test-canary.yml

@@ -32,7 +32,14 @@ jobs:
           sudo losetup -Dv
           sudo losetup -lv
       - name: "Register QEMU (tonistiigi/binfmt)"
-        run: docker run --privileged --rm tonistiigi/binfmt --install all
+        run: |
+          # `--install all` will only install emulation for architectures that cannot be natively executed
+          # Since some arm64 platforms do provide native fallback execution for 32 bits,
+          # armv7 emulation may or may not be installed, causing variance in the result of `uname -m`.
+          # To avoid that, we explicitly list the architectures we do want emulation for.
+          docker run --privileged --rm tonistiigi/binfmt --install linux/amd64
+          docker run --privileged --rm tonistiigi/binfmt --install linux/arm64
+          docker run --privileged --rm tonistiigi/binfmt --install linux/arm/v7
       - name: "Run unit tests"
         run: go test -v ./pkg/...
       - name: "Run integration tests"

.github/workflows/test.yml

@@ -84,7 +84,14 @@ jobs:
           sudo losetup -Dv
           sudo losetup -lv
       - name: "Register QEMU (tonistiigi/binfmt)"
-        run: docker run --privileged --rm tonistiigi/binfmt --install all
+        run: |
+          # `--install all` will only install emulation for architectures that cannot be natively executed
+          # Since some arm64 platforms do provide native fallback execution for 32 bits,
+          # armv7 emulation may or may not be installed, causing variance in the result of `uname -m`.
+          # To avoid that, we explicitly list the architectures we do want emulation for.
+          docker run --privileged --rm tonistiigi/binfmt --install linux/amd64
+          docker run --privileged --rm tonistiigi/binfmt --install linux/arm64
+          docker run --privileged --rm tonistiigi/binfmt --install linux/arm/v7
       - name: "Run integration tests"
         uses: nick-fields/retry@v3
         with:
@@ -128,7 +135,14 @@ jobs:
           sudo losetup -Dv
           sudo losetup -lv
       - name: "Register QEMU (tonistiigi/binfmt)"
-        run: docker run --privileged --rm tonistiigi/binfmt --install all
+        run: |
+          # `--install all` will only install emulation for architectures that cannot be natively executed
+          # Since some arm64 platforms do provide native fallback execution for 32 bits,
+          # armv7 emulation may or may not be installed, causing variance in the result of `uname -m`.
+          # To avoid that, we explicitly list the architectures we do want emulation for.
+          docker run --privileged --rm tonistiigi/binfmt --install linux/amd64
+          docker run --privileged --rm tonistiigi/binfmt --install linux/arm64
+          docker run --privileged --rm tonistiigi/binfmt --install linux/arm/v7
       - name: "Run integration tests"
         # The nested IPv6 network inside docker and qemu is complex and needs a bunch of sysctl config.
         # Therefore it's hard to debug why the IPv6 tests fail in such an isolation layer.
@@ -191,7 +205,14 @@ jobs:
         with:
           fetch-depth: 1
       - name: "Register QEMU (tonistiigi/binfmt)"
-        run: docker run --privileged --rm tonistiigi/binfmt --install all
+        run: |
+          # `--install all` will only install emulation for architectures that cannot be natively executed
+          # Since some arm64 platforms do provide native fallback execution for 32 bits,
+          # armv7 emulation may or may not be installed, causing variance in the result of `uname -m`.
+          # To avoid that, we explicitly list the architectures we do want emulation for.
+          docker run --privileged --rm tonistiigi/binfmt --install linux/amd64
+          docker run --privileged --rm tonistiigi/binfmt --install linux/arm64
+          docker run --privileged --rm tonistiigi/binfmt --install linux/arm/v7
       - name: "Prepare (network driver=slirp4netns, port driver=builtin)"
         run: docker build -t ${TEST_TARGET} --target ${TEST_TARGET} --build-arg UBUNTU_VERSION=${UBUNTU_VERSION} --build-arg CONTAINERD_VERSION=${CONTAINERD_VERSION} --build-arg ROOTLESSKIT_VERSION=${ROOTLESSKIT_VERSION} .
       - name: "Disable BuildKit for RootlessKit v1 (workaround for issue #622)"
@@ -246,7 +267,14 @@ jobs:
           docker info
           docker version
       - name: "Register QEMU (tonistiigi/binfmt)"
-        run: docker run --privileged --rm tonistiigi/binfmt --install all
+        run: |
+          # `--install all` will only install emulation for architectures that cannot be natively executed
+          # Since some arm64 platforms do provide native fallback execution for 32 bits,
+          # armv7 emulation may or may not be installed, causing variance in the result of `uname -m`.
+          # To avoid that, we explicitly list the architectures we do want emulation for.
+          docker run --privileged --rm tonistiigi/binfmt --install linux/amd64
+          docker run --privileged --rm tonistiigi/binfmt --install linux/arm64
+          docker run --privileged --rm tonistiigi/binfmt --install linux/arm/v7
       - name: "Prepare integration test environment"
         run: |
           sudo apt-get install -y expect