Website service target setup (#2)

This PR contains the work done to add and setup the *Website* service target, a **Hummingbird** server app, into the Xcode project as a SwiftPM package with full support for containerization and driven by a `Makefile` file.

To provide further details about the work done:

* Swift package — SwiftPM manifest with a Website executable, related library, and test targets; depends on **hummingbird** and **swift-configuration**.
* Containerization — Multi-stage `Dockerfile` producing a static-linked release build with jemalloc, running as a non-root user on port 8080. Production and local-dev `docker-compose` files included.
* Configuration — `.env.local` template (with `.env` git-ignored) and `.dockerignore`/`.gitignore` entries.
* Makefile — Self-documenting operational commands:
  * pkg — SwiftPM: _build, release, test, clean, reset, deps, outdated, update_
  * img — Docker lifecycle: _build, mount, unmount, release_

Notes

* New service only — no changes to existing code; nothing else in the repo is affected.
* App logic is currently scaffolding; this PR establishes the service structure, build, and deployment tooling.

Reviewed-on: rock-n-code/loud-amsterdam#2
Co-authored-by: Javier Cicchelli <javier@rock-n-code.com>
Co-committed-by: Javier Cicchelli <javier@rock-n-code.com>

Services/Website/Sources/App/App+build.swift

@@ -0,0 +1,62 @@
+import Configuration
+import Hummingbird
+import Logging
+
+///  Build application
+/// - Parameter reader: configuration reader
+func application(
+    reader: ConfigReader
+) async throws -> some ApplicationProtocol {
+    let logLevel = reader.string(
+        forKey: "log.level",
+        as: Logger.Level.self,
+        default: .info
+    )
+    let serverName = reader.string(
+        forKey: "http.serverName",
+        default: "LoudWebsite"
+    )
+
+    return Application(
+        router: try router(),
+        configuration: ApplicationConfiguration(
+            reader: reader.scoped(to: "http")
+        ),
+        logger: logger(
+            serverName: serverName,
+            logLevel: logLevel
+        )
+    )
+}
+
+// MARK: - Helpers
+
+// Request context used by application
+private typealias AppRequestContext = BasicRequestContext
+
+/// Build logger
+private func logger(
+    serverName: String,
+    logLevel: Logger.Level
+) -> Logger {
+    var logger = Logger(label: serverName)
+
+    logger.logLevel = logLevel
+
+    return logger
+}
+
+/// Build router
+private func router() throws -> Router<AppRequestContext> {
+    let router = Router(context: AppRequestContext.self)
+
+    router.addMiddleware {
+        LogRequestsMiddleware(.info)
+    }
+
+    router.get("/") { _, _ in
+        return "Hello!"
+    }
+
+    return router
+}

Services/Website/Sources/App/App.swift

@@ -0,0 +1,28 @@
+import Configuration
+import Hummingbird
+import Logging
+
+@main
+struct App {
+    static func main() async throws {
+        let reader = try await ConfigReader(
+            providers: [
+                CommandLineArgumentsProvider(),
+                EnvironmentVariablesProvider(),
+                EnvironmentVariablesProvider(
+                    environmentFilePath: ".env",
+                    allowMissing: true
+                ),
+                InMemoryProvider(values: [
+                    "http.serverName": "LoudWebsite"
+                ]),
+            ]
+        )
+
+        let app = try await application(
+            reader: reader
+        )
+
+        try await app.runService()
+    }
+}