feat: build talosctl for ARM64

This adds an ARM64 build of `talosctl`.

Signed-off-by: Andrew Rynhard <andrew@andrewrynhard.com>

.drone.yml

@@ -3458,6 +3458,7 @@ steps:
     - _out/installer.tar
     - _out/talosctl-darwin-amd64
     - _out/talosctl-linux-amd64
+    - _out/talosctl-linux-arm64
     - _out/vmware.ova
     - _out/vmlinux
     - _out/vmlinuz
@@ -3572,6 +3573,6 @@ depends_on:
 
 ---
 kind: signature
-hmac: de88d1e74755b71883afb67e12dea17205b75e9ec462837f035257292ffbe805
+hmac: 16c7e32ef2ca8687136040290ea9f3e1b74c54d3ec103c908fc1cea2d38858c0
 
 ...

Dockerfile

@@ -217,7 +217,7 @@ RUN --security=insecure img build --tag ${USERNAME}/routerd:${TAG} --output type
 
 # The talosctl targets build the talosctl binaries.
 
-FROM base AS talosctl-linux-build
+FROM base AS talosctl-linux-amd64-build
 ARG SHA
 ARG TAG
 ARG ARTIFACTS
@@ -227,8 +227,19 @@ WORKDIR /src/cmd/talosctl
 RUN --mount=type=cache,target=/.cache/go-build GOOS=linux GOARCH=amd64 go build -ldflags "-s -w -X ${VERSION_PKG}.Name=Client -X ${VERSION_PKG}.SHA=${SHA} -X ${VERSION_PKG}.Tag=${TAG} -X ${MGMT_HELPERS_PKG}.ArtifactsPath=${ARTIFACTS}" -o /talosctl-linux-amd64
 RUN chmod +x /talosctl-linux-amd64
 
+FROM base AS talosctl-linux-arm64-build
+ARG SHA
+ARG TAG
+ARG ARTIFACTS
+ARG VERSION_PKG="github.com/talos-systems/talos/pkg/version"
+ARG MGMT_HELPERS_PKG="github.com/talos-systems/talos/cmd/talosctl/pkg/mgmt/helpers"
+WORKDIR /src/cmd/talosctl
+RUN --mount=type=cache,target=/.cache/go-build GOOS=linux GOARCH=arm64 go build -ldflags "-s -w -X ${VERSION_PKG}.Name=Client -X ${VERSION_PKG}.SHA=${SHA} -X ${VERSION_PKG}.Tag=${TAG} -X ${MGMT_HELPERS_PKG}.ArtifactsPath=${ARTIFACTS}" -o /talosctl-linux-arm64
+RUN chmod +x /talosctl-linux-arm64
+
 FROM scratch AS talosctl-linux
-COPY --from=talosctl-linux-build /talosctl-linux-amd64 /talosctl-linux-amd64
+COPY --from=talosctl-linux-amd64-build /talosctl-linux-amd64 /talosctl-linux-amd64
+COPY --from=talosctl-linux-arm64-build /talosctl-linux-arm64 /talosctl-linux-arm64
 
 FROM base AS talosctl-darwin-build
 ARG SHA

hack/drone.jsonnet

@@ -428,6 +428,7 @@ local release = {
       '_out/installer.tar',
       '_out/talosctl-darwin-amd64',
       '_out/talosctl-linux-amd64',
+      '_out/talosctl-linux-arm64',
       '_out/vmware.ova',
       '_out/vmlinux',
       '_out/vmlinuz',