Build developers local platform by default

Signed-off-by: Austin Vazquez <austin.vazquez@docker.com>

Author: austinvazquez

.github/workflows/ci.yml

@@ -203,8 +203,8 @@ jobs:
 
       - name: Build remaining artifacts (initrd and shim)
         run: |
-          echo "Building shim, initrd and libkrun..."
-          docker buildx bake shim initrd libkrun
+          echo "Building host and guest binaries:"
+          docker buildx bake host-binaries guest-binaries
 
       - name: Verify all artifacts
         run: |

Makefile

@@ -23,6 +23,7 @@ ONI = "👹"
 
 ARCH = $(shell uname -m)
 OS = $(shell uname -s)
+
 LDFLAGS_x86_64_Linux = -lkrun
 LDFLAGS_aarch64_Linux = -lkrun
 LDFLAGS_arm64_Darwin = -L/opt/homebrew/lib -lkrun
@@ -52,10 +53,13 @@ GO_STATIC_LDFLAGS := -ldflags '-extldflags "-static" $(LDFLAGS) $(EXTRA_LDFLAGS)
 MODULE_NAME=$(shell go list -m)
 API_PACKAGES=$(shell ($(GO) list ${GO_TAGS} ./... | grep /api/ ))
 
-.PHONY: clean all validate lint generate protos check-protos check-api-descriptors proto-fmt shell
+.PHONY: clean all build validate lint generate protos check-protos check-api-descriptors proto-fmt shell
+
+all: build
 
-all:
-	$(BUILDX) bake
+build:
+	@echo "$(WHALE) $@"
+	HOST_OS=$(shell uname -s | tr '[:upper:]' '[:lower:]') KERNEL_ARCH=$(ARCH) $(BUILDX) bake
 
 _output/containerd-shim-nerdbox-v1: cmd/containerd-shim-nerdbox-v1 FORCE
 	@echo "$(WHALE) $@"

docker-bake.hcl

@@ -1,3 +1,7 @@
+variable "HOST_OS" {
+  default = "linux"
+}
+
 variable "KERNEL_VERSION" {
   default = "6.12.44"
 }
@@ -47,44 +51,66 @@ target "_common" {
   }
 }
 
+target "_host_common" {
+  inherits = ["_common"]
+  args = {
+    TARGETOS = HOST_OS
+  }
+}
+
+target "_guest_common" {
+  inherits = ["_common"]
+  args = {
+    TARGETOS = "linux"
+  }
+}
+
 variable "DESTDIR" {
   default = "_output"
 }
 
+group "default" {
+  targets = ["host-binaries", "guest-binaries", "kernel"]
+}
+
+group "host-binaries" {
+  targets = ["shim", "libkrun"]
+}
+
+group "guest-binaries" {
+  targets = ["initrd"]
+}
+
 target "menuconfig" {
   inherits = ["_common"]
   target = "kernel-build-base"
   output = ["type=image,name=nerdbox-menuconfig"]
 }
 
 target "kernel" {
-  inherits = ["_common"]
+  inherits = ["_guest_common"]
   target = "kernel"
   output = ["${DESTDIR}"]
 }
 
 target "initrd" {
-  inherits = ["_common"]
+  inherits = ["_guest_common"]
   target = "initrd"
   output = ["${DESTDIR}"]
 }
 
 target "shim" {
-  inherits = ["_common"]
+  inherits = ["_host_common"]
   target = "shim"
   output = ["${DESTDIR}"]
 }
 
 target "libkrun" {
-  inherits = ["_common"]
+  inherits = ["_host_common"]
   target = "libkrun"
   output = ["${DESTDIR}"]
 }
 
-group "default" {
-    targets = ["kernel", "initrd", "shim"]
-}
-
 target "dev" {
   inherits = ["_common"]
   target = "dev"