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Build Calico image

Directory structure​

.
├── Kubefile
├── cni
│   ├── custom-resources.yaml
│   └── tigera-operator.yaml
├── images
│   └── shim
│       └── CalicoImageList
└── registry
    └── docker
        └── registry

Dockerfile​

We can build everything into a single image(FROM labring/kubernetes), or use FROM scratch instead to build the image from scratch.

FROM labring/kubernetes:v1.24.0
COPY cni ./cni
COPY images ./images
COPY registry ./registry
CMD ["kubectl apply -f cni/tigera-operator.yaml","kubectl apply -f cni/custom-resources.yaml"]
  1. CalicoImageList: Docker image list file.
  2. cni: Configuration files for kubectl apply.
  3. registry: Directory storing container registry data.
  4. sealos build -t kubernetes-calico:1.24.0-amd64 --platform linux/amd64 -f Kubefile .: Build OCI image.
  5. manifests: Parse images in yaml files to Docker image list.

Build Calico image​

Directory structure​

.
├── Kubefile
├── cni
│   ├── custom-resources.yaml
│   └── tigera-operator.yaml

Dockerfile​

This image includes Kubernetes and Calico.

FROM labring/kubernetes:v1.24.0-amd64
COPY cni ./cni
CMD ["kubectl apply -f cni/tigera-operator.yaml","kubectl apply -f cni/custom-resources.yaml"]
  1. cni: Configuration files for kubectl apply.
  2. sealos build -t kubernetes-calico:1.24.0-amd64 --platform linux/amd64 -f Kubefile .: Build OCI image.

Build OpenEBS image​

Directory structure​

.
├── Kubefile
├── cni
│   ├── custom-resources.yaml
│   └── tigera-operator.yaml
└── manifests
    └── openebs-operator.yaml

Dockerfile​

FROM labring/oci-kubernetes-calico:1.24.0-amd64
COPY cni ./cni
COPY manifests ./manifests
CMD ["kubectl apply -f cni/tigera-operator.yaml","kubectl apply -f cni/custom-resources.yaml","kubectl apply -f manifests/openebs-operator.yaml"]
  1. cni: Configuration files for kubectl apply.
  2. sealos build -t labring/kubernetes-calico-openebs:1.24.0-amd64 --platform linux/amd64 -f Kubefile .: Build OCI image.

::: Suggestions

You need to add Calico CMD to OpenEBS CMD layer, as Dockerfile will overwrite the older layer.

:::

Build cross-platform images​

Download buildah for x86_64 platform​

wget -qO "buildah" https://github.com/labring/cluster-image/releases/download/depend/buildah.linux.amd64  && \
  chmod a+x buildah && mv buildah /usr/bin

Download buildah for aarch64 platform​

wget -qO "buildah" https://github.com/labring/cluster-image/releases/download/depend/buildah.linux.arm64  && \
  chmod a+x buildah && mv buildah /usr/bin

Cross-platform build image​

$ sealos build -t $prefix/oci-kubernetes:$version-amd64 --platform linux/amd64   -f Kubefile  .
$ sealos build -t $prefix/oci-kubernetes:$version-arm64 --platform linux/arm64   -f Kubefile  .

$ buildah login --username $username --password $password $domain
$ buildah push $prefix/oci-kubernetes:$version-amd64
$ buildah push $prefix/oci-kubernetes:$version-arm64
$ buildah manifest create $prefix/oci-kubernetes:$version
$ buildah manifest add $prefix/oci-kubernetes:$version docker://$prefix/oci-kubernetes:$version-amd64
$ buildah manifest add $prefix/oci-kubernetes:$version docker://$prefix/oci-kubernetes:$version-arm64
$ buildah manifest push --all $prefix/oci-kubernetes:$version docker://$prefix/oci-kubernetes:$version