Create v0.2.11 release, common version string, healthcheck endpoint, healthcheck in Dockerfile

Author: supleed2

Dockerfile

@@ -11,4 +11,5 @@ WORKDIR /app
 COPY --from=builder /app/server .
 EXPOSE 8080
 USER appuser
+HEALTHCHECK CMD wget --spider http://127.0.0.1:8080/health || exit 1
 CMD ["./server"]

changelog.md

@@ -19,6 +19,13 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ### Security
 
+## [0.2.11] - 2025-10-24
+
+### Added
+
+- Healthcheck in Dockerfile
+- `/health` endpoint for healthcheck, returns current server version
+
 ## [0.2.10] - 2025-10-24
 
 ### Fixed
@@ -125,7 +132,8 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 - Go programs for [client](./tui/main.go) and [server](./server/main.go)
 - GitHub Actions release flow, including binaries
 
-[unreleased]: https://github.com/supleed2/go-chat/compare/v0.2.10...HEAD
+[unreleased]: https://github.com/supleed2/go-chat/compare/v0.2.11...HEAD
+[0.2.11]: https://github.com/supleed2/go-chat/releases/tag/v0.2.11
 [0.2.10]: https://github.com/supleed2/go-chat/releases/tag/v0.2.10
 [0.2.9]: https://github.com/supleed2/go-chat/releases/tag/v0.2.9
 [0.2.8]: https://github.com/supleed2/go-chat/releases/tag/v0.2.8

client/main.go

@@ -76,7 +76,7 @@ type args struct {
 }
 
 func (a *args) Version() string {
-	return "v0.2.10"
+	return c.Version
 }
 
 func (a *args) Description() string {

common/types.go

@@ -2,6 +2,8 @@ package common
 
 import "time"
 
+const Version = "0.2.11"
+
 type SMsg struct {
 	Tim time.Time
 	Id  string

server/main.go

@@ -64,7 +64,7 @@ const createRoomTable = "CREATE TABLE IF NOT EXISTS %s (tim DATETIME, id TEXT, m
 const insertRoomMsg = "INSERT INTO %v (tim, id, msg) VALUES (:tim, :id, :msg)"
 
 func (a *args) Version() string {
-	return "v0.2.10"
+	return c.Version
 }
 
 func (a *args) Description() string {
@@ -147,6 +147,12 @@ func run(addr string, nickMap map[string]string, admin string, rhlen int, log *l
 }
 
 func (s server) ServeHTTP(w http.ResponseWriter, r *http.Request) {
+	if r.Method == "GET" && r.URL.Path == "/health" {
+		w.WriteHeader(http.StatusOK)
+		fmt.Fprintf(w, "go-chat %s is up!", c.Version)
+		return
+	}
+
 	if r.ProtoAtLeast(1, 1) && !hasUpgradeHeader(r.Header) {
 		http.Redirect(w, r, "https://github.com/supleed2/go-chat", http.StatusSeeOther)
 		return