Merge pull request netobserv#101 from eranra/improve_version

improve version from Makefile

Makefile

@@ -22,6 +22,18 @@ NETFLOW_GENERATOR=nflow-generator
 CMD_DIR=./cmd/
 FLP_CONF_FILE ?= contrib/kubernetes/flowlogs-pipeline.conf.yaml
 
+BUILD_DATE := $(shell date +%Y-%m-%d\ %H:%M)
+TAG_COMMIT := $(shell git rev-list --abbrev-commit --tags --max-count=1)
+TAG := $(shell git describe --abbrev=0 --tags ${TAG_COMMIT} 2>/dev/null || true)
+COMMIT := $(shell git rev-parse --short HEAD)
+BUILD_VERSION := $(TAG:v%=%)
+ifneq ($(COMMIT), $(TAG_COMMIT))
+	BUILD_VERSION := $(BUILD_VERSION)-$(COMMIT)
+endif
+ifneq ($(shell git status --porcelain),)
+	BUILD_VERSION := $(BUILD_VERSION)-dirty
+endif
+
 .DEFAULT_GOAL := help
 
 FORCE: ;
@@ -59,7 +71,7 @@ lint: $(GOLANGCI_LINT) ## Lint the code
 .PHONY: build_code
 build_code: validate_go lint
 	@go mod vendor
-	VERSION=$$(date); go build -ldflags "-X 'main.Version=$$VERSION'" "${CMD_DIR}${FLP_BIN_FILE}"
+	go build -ldflags "-X 'main.BuildVersion=$(BUILD_VERSION)' -X 'main.BuildDate=$(BUILD_DATE)'" "${CMD_DIR}${FLP_BIN_FILE}"
 
 .PHONY: build
 build: build_code docs ## Build flowlogs-pipeline executable and update the docs

cmd/flowlogs-pipeline/main.go

@@ -36,7 +36,8 @@ import (
 )
 
 var (
-	Version            string
+	BuildVersion       string
+	BuildDate          string
 	cfgFile            string
 	logLevel           string
 	envPrefix          = "FLOWLOGS-PIPILNE"
@@ -163,7 +164,8 @@ func run() {
 	)
 
 	// Initial log message
-	fmt.Printf("%s starting - version [%s]\n\n", filepath.Base(os.Args[0]), Version)
+	fmt.Printf("Starting %s:\n=====\nBuild Version: %s\nBuild Date: %s\n\n",
+		filepath.Base(os.Args[0]), BuildVersion, BuildDate)
 
 	// Dump configuration
 	dumpConfig()

contrib/docker/Dockerfile

@@ -6,14 +6,17 @@ WORKDIR /app
 COPY go.mod .
 COPY go.sum .
 
-# Download modules
-RUN go mod download
-
 COPY cmd/ cmd/
 COPY pkg/ pkg/
+COPY .bingo/ .bingo/
+COPY .git/ .git/
+COPY Makefile Makefile
+
+# Download modules
+RUN go mod download
+RUN go mod vendor
 
-# Build
-RUN VERSION=$(date); CGO_ENABLED=0 GOOS=linux GO111MODULE=on GOARCH=amd64 go build -ldflags "-X 'main.Version=$VERSION'" ./cmd/flowlogs-pipeline
+RUN make build_code
 
 # final stage
 FROM ubuntu