refactor(config): change KIMG_HTTPD_HOST to KIMG_HTTPD_URL

BREAKING CHANGE: KIMG_HTTPD_HOST changed to KIMG_HTTPD_URL

config.go

@@ -14,7 +14,7 @@ import (
 type KimgConfig struct {
 	Httpd struct {
 		Bind      string            `yaml:"bind,omitempty"`
-		Host      string            `yaml:"host,omitempty"`
+		URL       string            `yaml:"url,omitempty"`
 		Headers   map[string]string `yaml:"headers,omitempty"`
 		Etag      bool              `yaml:"etag,omitempty"`
 		MaxAge    int               `yaml:"maxAge,omitempty"`
@@ -62,7 +62,7 @@ func NewKimgConfig(configFile string) (*KimgConfig, error) {
 	var cfg KimgConfig
 
 	cfg.Httpd.Bind = "0.0.0.0:80"
-	cfg.Httpd.Host = "/"
+	cfg.Httpd.URL = "/"
 	cfg.Httpd.Headers = map[string]string{"Server": "kimg"}
 	cfg.Httpd.Etag = true
 	cfg.Httpd.MaxAge = 90 * 24 * 3600
@@ -105,8 +105,8 @@ func NewKimgConfig(configFile string) (*KimgConfig, error) {
 	if env, ok := os.LookupEnv("KIMG_HTTPD_BIND"); ok {
 		cfg.Httpd.Bind = env
 	}
-	if env, ok := os.LookupEnv("KIMG_HTTPD_HOST"); ok {
-		cfg.Httpd.Host = env
+	if env, ok := os.LookupEnv("KIMG_HTTPD_URL"); ok {
+		cfg.Httpd.URL = env
 	}
 	if env, ok := os.LookupEnv("KIMG_HTTPD_HEADERS"); ok {
 		arr := strings.Split(env, ",")

image.go

@@ -82,7 +82,7 @@ func (image *KimgImagick) Info(req *KimgRequest, data []byte) (*KimgResponse, er
 		exif[name] = mw.GetImageProperty(name)
 	}
 
-	u, _ := url.Parse(image.ctx.Config.Httpd.Host)
+	u, _ := url.Parse(image.ctx.Config.Httpd.URL)
 	u.Path = fmt.Sprintf("image/%s", req.Md5)
 	return &KimgResponse{
 		Md5:         req.Md5,

kimg.yaml

@@ -13,10 +13,10 @@ httpd:
   # ENV KIMG_HTTPD_BIND
   bind: 0.0.0.0:80
 
-  # Kimg web server hostname to serve.
+  # Kimg web server url.
   # 
-  # ENV KIMG_HTTPD_HOST
-  host: 
+  # ENV KIMG_HTTPD_URL
+  url: 
 
   # Http headers set on image fetch response.
   #