WIP: dockerfile for producing kind images with different kernels

Signed-off-by: Mark Pashmfouroush <[email protected]>

Author: markpash

.github/workflows/buildx-kind.yaml

@@ -0,0 +1,38 @@
+name: buildx-kind
+on:
+  push:
+    branches:
+      - "markpash/kind-kernels"
+jobs:
+  docker:
+    strategy:
+      matrix:
+        kernel: [ "4.19", "5.4", "5.10", "bpf-next" ]
+    runs-on: ubuntu-latest
+    timeout-minutes: 60
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v3
+
+      - name: Set up Docker Buildx
+        uses: docker/setup-buildx-action@v2
+
+      - name: Login to Quay.io
+        uses: docker/login-action@v2
+        with:
+          registry: quay.io
+          username: ${{ secrets.QUAY_USERNAME }}
+          password: ${{ secrets.QUAY_ROBOT_TOKEN }}
+
+      - name: Build and push
+        uses: docker/build-push-action@v3
+        with:
+          context: .
+          file: dockerfiles/kind-image
+          no-cache: true
+          allow: |
+            security.insecure
+          build-args: |
+            "KERNEL_VER=${{ matrix.kernel }}"
+          push: true
+          tags: lvh-images/kind:${{ matrix.kernel }}

dockerfiles/kind-image

@@ -0,0 +1,50 @@
+# syntax=docker/dockerfile:1.3-labs
+# vim: set ft=dockerfile:
+
+# override this with --build-arg
+ARG KERNEL_VER=bpf-next
+
+FROM quay.io/lvh-images/root-images:latest AS root-images
+FROM quay.io/lvh-images/kernel-images:"${KERNEL_VER}" AS kernel-image
+FROM quay.io/lvh-images/root-builder:latest AS builder
+
+ARG KERNEL_VER=bpf-next
+
+WORKDIR /data
+COPY --from=kernel-image /data/kernels /data/kernels
+COPY --from=root-images /data/images/kind.qcow2.zst /data/images/kind.qcow2.zst
+RUN zstd --decompress --rm --threads=0 /data/images/kind.qcow2.zst
+
+COPY <<EOF /data/images.json
+[
+    {
+        \"name\": \"kind_"${KERNEL_VER}".qcow2\",
+        \"parent\": \"kind.qcow2\",
+        \"actions\": [
+            {
+                \"comment\": \"install "${KERNEL_VER}"\",
+                \"op\": {
+                    \"KernelInstallDir\": \"/data/kernels/"${KERNEL_VER}"\"
+                },
+                \"type\": \"install-kernel\"
+            },
+            {
+                \"comment\": \"run depmod against all kernels\",
+                \"op\": {
+                    \"Cmd\": \"find /lib/modules/ -maxdepth 1 -mindepth 1 -type d -exec basename {} \';\' | xargs -n1 depmod\"
+                },
+                \"type\": \"run-command\"
+            },
+            { \"op\": { \"Hostname\": \"kind-"${KERNEL_VER}"\"}, \"type\": \"set-hostname\" }
+        ]
+    }
+]
+EOF
+
+# mmdebstrap outputs messages in stderr, so we redirect stderr
+RUN lvh images build --image kind_${KERNEL_VER}.qcow2 --dir /data 2>&1
+RUN zstd --compress --rm --threads=0 /data/images/kind_${KERNEL_VER}.qcow2
+RUN rm /data/images/*.qcow2
+
+FROM busybox
+COPY --from=builder /data/images /data/images

dockerfiles/root-images

@@ -1,5 +1,5 @@
 # vim: set ft=dockerfile:
-FROM quay.io/lvh-images/root-builder AS builder
+FROM quay.io/lvh-images/root-builder:latest AS builder
 COPY _data /data
 # mmdebstrap outputs messages in stderr, so we redirect stderr
 RUN lvh images build --dir /data 2>&1