Read binary version using BuildInfo

Dockerfile

@@ -1,7 +1,5 @@
 FROM docker.io/library/golang:alpine as builder
 
-ARG PB_BUILD_VERSION
-
 ARG CLI_VERSION=0.0.6
 ARG CLI_PLATFORM=linux_amd64
 
@@ -13,7 +11,7 @@ RUN set -ex \
 	&& apk add --no-cache build-base ca-certificates curl \
 	&& go mod download \
 	&& go mod verify \
-	&& PB_BUILD_VERSION="$PB_BUILD_VERSION" make build \
+	&& make build \
 	&& chmod +x /build/out/pushbits \
 	&& curl -q -s -S -L -o /tmp/pbcli_${CLI_VERSION}.tar.gz https://github.com/pushbits/cli/releases/download/v${CLI_VERSION}/pbcli_${CLI_VERSION}_${CLI_PLATFORM}.tar.gz \
 	&& tar -C /usr/local/bin -xvf /tmp/pbcli_${CLI_VERSION}.tar.gz pbcli \

Makefile

@@ -5,15 +5,10 @@ TESTS_DIR := ./tests
 GO_FILES := $(shell find . -type f \( -iname '*.go' \))
 GO_MODULE := github.com/pushbits/server
 
-PB_BUILD_VERSION ?= $(shell git describe --tags)
-ifeq ($(PB_BUILD_VERSION),)
-	_ := $(error Cannot determine build version)
-endif
-
 .PHONY: build
 build:
 	mkdir -p $(OUT_DIR)
-	go build -ldflags="-w -s -X main.version=$(PB_BUILD_VERSION)" -o $(OUT_DIR)/pushbits ./cmd/pushbits
+	go build -ldflags="-w -s" -o $(OUT_DIR)/pushbits ./cmd/pushbits
 
 .PHONY: clean
 clean:
@@ -63,7 +58,6 @@ swag: build
 .PHONY: docker_build_dev
 docker_build_dev:
 	podman build \
-		--build-arg=PB_BUILD_VERSION=dev \
 		-t local/pushbits .
 
 .PHONY: run_postgres_debug

cmd/pushbits/main.go

@@ -4,6 +4,7 @@ package main
 import (
 	"os"
 	"os/signal"
+	"runtime/debug"
 	"syscall"
 
 	"github.com/pushbits/server/internal/authentication/credentials"
@@ -15,8 +16,6 @@ import (
 	"github.com/pushbits/server/internal/runner"
 )
 
-var version string
-
 func setupCleanup(db *database.Database, dp *dispatcher.Dispatcher) {
 	c := make(chan os.Signal, 2)
 	signal.Notify(c, os.Interrupt, syscall.SIGTERM)
@@ -30,11 +29,13 @@ func setupCleanup(db *database.Database, dp *dispatcher.Dispatcher) {
 }
 
 func printStarupMessage() {
-	if len(version) == 0 {
-		log.L.Panic("Version not set")
-	} else {
-		log.L.Printf("Starting PushBits %s", version)
+	buildInfo, ok := debug.ReadBuildInfo()
+	if !ok {
+		log.L.Fatalln("Build info not available")
+		return
 	}
+
+	log.L.Printf("Starting PushBits %s", buildInfo.Main.Version)
 }
 
 // @title PushBits Server API Documentation