Use static VERSION file for version inject

This allows us to modify only one place to set the container as well as
the internal version.

Signed-off-by: Sascha Grunert <sgrunert@suse.com>

Dockerfile

@@ -36,9 +36,10 @@ ADD . /work
 RUN make
 
 FROM scratch
+ARG version
 
 LABEL name="Seccomp Operator" \
-      version="0.0.0" \
+      version=$version \
       description="The Seccomp Operator makes it easier for cluster admins to manage their seccomp profiles and apply them to Kubernetes' workloads."
 
 COPY --from=build /etc/ssl/certs/ca-certificates.crt /etc/ssl/certs/

Makefile

@@ -26,14 +26,16 @@ endif
 
 GIT_COMMIT := $(shell git rev-parse HEAD 2> /dev/null || echo unknown)
 GIT_TREE_STATE := $(if $(shell git status --porcelain --untracked-files=no),dirty,clean)
+VERSION := $(shell cat VERSION)
 
 BUILDTAGS := netgo
 BUILD_FILES := $(shell find . -type f -name '*.go' -or -name '*.mod' -or -name '*.sum' -not -name '*_test.go')
 GO_PROJECT := sigs.k8s.io/$(PROJECT)
 LDVARS := \
 	-X $(GO_PROJECT)/internal/pkg/version.buildDate=$(BUILD_DATE) \
 	-X $(GO_PROJECT)/internal/pkg/version.gitCommit=$(GIT_COMMIT) \
-	-X $(GO_PROJECT)/internal/pkg/version.gitTreeState=$(GIT_TREE_STATE)
+	-X $(GO_PROJECT)/internal/pkg/version.gitTreeState=$(GIT_TREE_STATE) \
+	-X $(GO_PROJECT)/internal/pkg/version.version=$(VERSION)
 LDFLAGS := -s -w -linkmode external -extldflags "-static" $(LDVARS)
 
 CONTAINER_RUNTIME ?= docker
@@ -85,7 +87,7 @@ default-profiles: ## Generate the default profiles
 
 .PHONY: image
 image: ## Build the container image
-	$(CONTAINER_RUNTIME) build -t $(IMAGE) .
+	$(CONTAINER_RUNTIME) build --build-arg version=$(VERSION) -t $(IMAGE) .
 
 # Verification targets
 

VERSION

@@ -0,0 +1 @@
+0.0.0

internal/pkg/version/version.go

@@ -24,13 +24,11 @@ import (
 	"text/tabwriter"
 )
 
-// version is the current version of the operator.
-const version = "0.0.0"
-
 var (
 	buildDate    string // build date in ISO8601 format, output of $(date -u +'%Y-%m-%dT%H:%M:%SZ')
 	gitCommit    string // sha1 from git, output of $(git rev-parse HEAD)
 	gitTreeState string // state of git tree, either "clean" or "dirty"
+	version      string // the current version of the operator
 )
 
 type Info struct {