feat(action): Add option to skip building

Signed-off-by: Cezar Craciunoiu <cezar.craciunoiu@unikraft.io>

action.yml

@@ -57,6 +57,10 @@ inputs:
   arch:
     description: Architecture to build for.
     required: false
+  build:
+    description: Toggle building the unikernel.
+    required: false
+    default: "true"
   plat:
     description: Platform to build for.
     required: false
@@ -207,6 +211,7 @@ runs:
         -e "INPUT_ARCH=${{ inputs.arch }}" \
         -e "INPUT_ARGS=${{ inputs.args }}" \
         -e "INPUT_AUTHS=${{ inputs.auths }}" \
+        -e "INPUT_BUILD=${{ inputs.build }}" \
         -e "INPUT_EXECUTE=${{ inputs.execute }}" \
         -e "INPUT_ROOTFS=${{ inputs.rootfs }}" \
         -e "INPUT_KRAFTFILE=${{ inputs.kraftfile }}" \

tools/github-action/main.go

@@ -41,6 +41,7 @@ type GithubAction struct {
 
 	// Build flags
 	Arch   string `long:"arch" env:"INPUT_ARCH" usage:"Architecture to build for"`
+	Build  bool   `long:"build" env:"INPUT_BUILD" usage:"Toggle building the unikernel"`
 	Plat   string `long:"plat" env:"INPUT_PLAT" usage:"Platform to build for"`
 	Target string `long:"target" env:"INPUT_TARGET" usage:"Name of the target to build for"`
 
@@ -260,8 +261,10 @@ func (opts *GithubAction) Run(ctx context.Context, args []string) (err error) {
 		return fmt.Errorf("could not pull project components: %w", err)
 	}
 
-	if err := opts.build(ctx); err != nil {
-		return fmt.Errorf("could not build unikernel: %w", err)
+	if opts.Build {
+		if err := opts.build(ctx); err != nil {
+			return fmt.Errorf("could not build unikernel: %w", err)
+		}
 	}
 
 	if opts.Execute {