fix(dockerfile): fix missing spdk and longhornctl

Dockerfile.dapper

@@ -20,6 +20,11 @@ RUN zypper -n install curl awk docker && \
 
 RUN curl -sSfL https://raw.githubusercontent.com/golangci/golangci-lint/master/install.sh | sh -s -- -b $(go env GOPATH)/bin ${GOLANGCI_LINT_VERSION}
 
+# Docker Buildx: The docker version in dapper is too old to have buildx. Install it manually.
+RUN curl -sSfLO https://github.com/docker/buildx/releases/download/v0.13.1/buildx-v0.13.1.linux-${ARCH} && \
+    chmod +x buildx-v0.13.1.linux-${ARCH} && \
+    mv buildx-v0.13.1.linux-${ARCH} /usr/local/bin/buildx
+
 ENV SPDK_COMMIT_ID 4542f9b14010fc7192d42e05adaafc2ae863bac5
 RUN cd /usr/src && \
     git clone https://github.com/longhorn/spdk.git /spdk && \

dapper/package

@@ -19,11 +19,12 @@ if [ ! -e ./bin/longhornctl ]; then
 fi
 
 # Copy SPDK scripts from the dapper container
-mkdir -p ./spdk
-cp -rf /spdk/scripts ./spdk/
+mkdir -p /spdk
+cp -rf /spdk/scripts spdk
 
 # Build image
-docker build -t "${IMAGE}" -f package/Dockerfile .
+buildx build --load -t ${IMAGE} -f package/Dockerfile .
+
 echo Built "${IMAGE}"
 # shellcheck disable=SC2086
 echo ${IMAGE} > ./bin/latest_image

package/Dockerfile

@@ -1,12 +1,24 @@
+# syntax=docker/dockerfile:1.8.1
+
 FROM registry.suse.com/bci/bci-base:15.6
 
+ARG TARGETPLATFORM
+RUN if [ "$TARGETPLATFORM" != "linux/amd64" ] && [ "$TARGETPLATFORM" != "linux/arm64" ]; then \
+    echo "Error: Unsupported TARGETPLATFORM: $TARGETPLATFORM" && \
+    exit 1; \
+    fi
+
+ENV ARCH ${TARGETPLATFORM#linux/}
+
 RUN zypper -n ref && \
     zypper update -y
 
 RUN zypper -n install jq && \
     rm -rf /var/cache/zypp/*
 
-COPY bin /usr/local/bin/
+COPY bin/longhornctl-linux-${ARCH} /usr/local/bin/longhornctl
+COPY bin/longhornctl-local-linux-${ARCH} /usr/local/bin/longhornctl-local
+
 COPY spdk /spdk
 
 CMD ["longhornctl"]