Add commit hash to index metadata

build.sh

@@ -0,0 +1,3 @@
+#!/bin/bash
+
+GIT_COMMIT=$(git rev-parse --short HEAD); go build -ldflags "-X main.GitCommit=$GIT_COMMIT"

main.go

@@ -15,9 +15,12 @@ import (
 const Name string = "Lithium"
 const Version string = "0.1.0"
 
+var GitCommit string
+
 type Metadata struct {
 	Name       string `json:"name"`
 	Version    string `json:"version"`
+	CommitHash string `json:"commit_hash"`
 }
 
 func PipelineHandler(pipeline pipelines.IPipeline, storageProvider storage.IStorageProvider, w http.ResponseWriter, r *http.Request) {
@@ -30,7 +33,7 @@ func PipelineHandler(pipeline pipelines.IPipeline, storageProvider storage.IStor
 
 func IndexHandler(w http.ResponseWriter, r *http.Request) {
 	w.Header().Set("Content-Type", "application/json")
-	err := json.NewEncoder(w).Encode(Metadata{Name, Version})
+	err := json.NewEncoder(w).Encode(Metadata{Name, Version, GitCommit})
 	if err != nil {
 		w.WriteHeader(http.StatusInternalServerError)
 	}