Initial version

Project structure, api, discovery service, docker.

internal/application/config.go

@@ -0,0 +1,25 @@
+package application
+
+import (
+	"context"
+	"fmt"
+	"time"
+
+	"github.com/sethvargo/go-envconfig"
+)
+
+type Config struct {
+	Debug             bool          `env:"DEBUG"`
+	DiscoveryPort     uint16        `env:"DISCOVERY_PORT,default=4321"`
+	BroadcastInterval time.Duration `env:"BROADCAST_INTERVAL,default=5s"`
+}
+
+func NewConfig(ctx context.Context) (Config, error) {
+	cfg := Config{}
+
+	if err := envconfig.Process(ctx, &cfg); err != nil {
+		return Config{}, fmt.Errorf("process envs: %w", err)
+	}
+
+	return cfg, nil
+}