Fix podman builds

Dockerfile

@@ -1,14 +1,9 @@
-# We do not use --platform feature to auto fill this ARG because of incompatibility between podman and docker
-ARG TARGETPLATFORM=linux/amd64
-ARG BUILDPLATFORM=linux/amd64
-ARG TARGETARCH=amd64
+ARG TARGETARCH
 
 # Build the manager binary
-FROM --platform=$BUILDPLATFORM docker.io/library/golang:1.22 as builder
-
+FROM docker.io/library/golang:1.22 as builder
 
-ARG TARGETARCH
-ARG TARGETPLATFORM
+ARG TARGETARCH=amd64
 ARG VERSION="unknown"
 
 WORKDIR /opt/app-root
@@ -28,7 +23,7 @@ COPY .mk/ .mk/
 RUN GOARCH=$TARGETARCH make compile
 
 # Create final image from minimal + built binary
-FROM --platform=$TARGETPLATFORM registry.access.redhat.com/ubi9/ubi-minimal:9.4
+FROM --platform=linux/$TARGETARCH registry.access.redhat.com/ubi9/ubi-minimal:9.4
 WORKDIR /
 COPY --from=builder /opt/app-root/bin/netobserv-ebpf-agent .
 USER 65532:65532

Makefile

@@ -51,7 +51,7 @@ EXCLUDE_COVERAGE_FILES="(/cmd/)|(bpf_bpfe)|(/examples/)|(/pkg/pbflow/)"
 # build a single arch target provided as argument
 define build_target
 	echo 'building image for arch $(1)'; \
-	DOCKER_BUILDKIT=1 $(OCI_BIN) buildx build --load --build-arg TARGETPLATFORM=linux/$(1) --build-arg TARGETARCH=$(1) --build-arg BUILDPLATFORM=linux/amd64 --build-arg GOVERSION="$(GO_VERSION)" ${OCI_BUILD_OPTS} -t ${IMAGE}-$(1) -f Dockerfile .;
+	DOCKER_BUILDKIT=1 $(OCI_BIN) buildx build --load --build-arg TARGETARCH=$(1) --build-arg GOVERSION="$(GO_VERSION)" ${OCI_BUILD_OPTS} -t ${IMAGE}-$(1) -f Dockerfile .;
 endef
 
 # push a single arch target image