podvm-mkosi: set IMAGE_NAME instead of cp .git

Copying the .git folder can lead to problems, e.g. if the make process
abortis, the extra .git folder is not removed and causes confusion in
the working tree.

Since the IMAGE_NAME doesn't matter for the mkosi binary builds, we can
set it explicitly to a static variable.

Signed-off-by: Magnus Kulke <magnuskulke@microsoft.com>

src/cloud-api-adaptor/podvm-mkosi/Makefile

@@ -46,7 +46,6 @@ PHONY: binaries
 binaries:
 	@echo "Building binaries..."
 	rm -rf ./resources/binaries-tree
-	cp -rf ../../../.git ../../.git
 ifeq ($(IS_DEBIAN),true)
 	docker buildx use default
 endif
@@ -56,11 +55,11 @@ endif
 		--build-arg PAUSE_REPO=$(PAUSE_REPO) \
 		--build-arg PAUSE_VERSION=$(PAUSE_VERSION) \
 		--build-arg PAUSE_BIN=$(PAUSE_BIN) \
+		--build-arg IMAGE_NAME=mkosi-podvm-binaries \
 		$(if $(AUTHFILE),--build-arg AUTHFILE=$(AUTHFILE),) \
 		$(if $(DEFAULT_AGENT_POLICY_FILE),--build-arg DEFAULT_AGENT_POLICY_FILE=$(DEFAULT_AGENT_POLICY_FILE),) \
 		-o type=local,dest="./resources/binaries-tree" \
 		-f ../podvm/Dockerfile.podvm_binaries.fedora ../../
-	rm -rf ../../.git
 
 PHONY: image
 image:

src/cloud-api-adaptor/podvm/Dockerfile.podvm_binaries.fedora

@@ -24,6 +24,7 @@ ARG AUTHFILE
 ARG PAUSE_REPO
 ARG PAUSE_VERSION
 ARG PAUSE_BIN
+ARG IMAGE_NAME
 
 ENV AUTHFILE=${AUTHFILE}
 ENV PAUSE_REPO=${PAUSE_REPO}
@@ -36,6 +37,7 @@ ENV GUEST_COMPONENTS_REPO=${GUEST_COMPONENTS_REPO}
 ENV ATTESTER=${ATTESTER}
 ENV ARCH=${ARCH}
 ENV DEFAULT_AGENT_POLICY_FILE=${DEFAULT_AGENT_POLICY_FILE}
+ENV IMAGE_NAME=${IMAGE_NAME}
 
 # Set these as they are required in the Makefile
 ENV IMAGE_URL="none"