Fixing Makefile and Containerfile

Signed-off-by: Edgar Hernández <23639005+israel-hdez@users.noreply.github.com>

Containerfile

@@ -1,5 +1,5 @@
 # Build the manager binary
-FROM registry.access.redhat.com/ubi9/go-toolset:1.21 as builder
+FROM registry.access.redhat.com/ubi9/go-toolset:9.5 as builder
 ARG TARGETOS
 ARG TARGETARCH
 
@@ -21,6 +21,7 @@ COPY internal/ internal/
 # was called. For example, if we call make docker-build in a local env which has the Apple Silicon M1 SO
 # the docker BUILDPLATFORM arg will be linux/arm64 when for Apple x86 it will be linux/amd64. Therefore,
 # by leaving it empty we can ensure that the container and binary shipped on it will have the same platform.
+USER root
 RUN CGO_ENABLED=0 GOOS=${TARGETOS:-linux} GOARCH=${TARGETARCH} go build -a -o manager cmd/main.go
 
 # Use distroless as minimal base image to package the manager binary

Makefile

@@ -15,7 +15,7 @@ endif
 # scaffolded by default. However, you might want to replace it to use other
 # tools. (i.e. podman)
 ENGINE ?= docker # Backwards compatibility
-CONTAINER_TOOL ?= $ENGINE
+CONTAINER_TOOL ?= $(ENGINE)
 
 # Setting SHELL to bash allows bash commands to be executed by recipes.
 # Options are set to exit when a recipe line exits non-zero or a piped command fails.