diff --git a/docker-compose.yaml b/docker-compose.yaml
index c83f0f0..ffcd9b1 100644
--- a/docker-compose.yaml
+++ b/docker-compose.yaml
@@ -1,4 +1,4 @@
-version: '3'
+version: "3"
 
 services:
   wg:
@@ -13,6 +13,8 @@ services:
       - EMAIL_FROM
       - EMAIL_FROM_NAME
       - SESSION_SECRET
+      - WGUI_USERNAME=alpha
+      - WGUI_PASSWORD=this-unusual-password
     logging:
       driver: json-file
       options:
diff --git a/store/jsondb/jsondb.go b/store/jsondb/jsondb.go
index b6ca74e..763756e 100644
--- a/store/jsondb/jsondb.go
+++ b/store/jsondb/jsondb.go
@@ -8,11 +8,12 @@ import (
 	"path"
 	"time"
 
-	"github.com/ngoduykhanh/wireguard-ui/model"
-	"github.com/ngoduykhanh/wireguard-ui/util"
 	"github.com/sdomino/scribble"
 	"github.com/skip2/go-qrcode"
 	"golang.zx2c4.com/wireguard/wgctrl/wgtypes"
+
+	"github.com/ngoduykhanh/wireguard-ui/model"
+	"github.com/ngoduykhanh/wireguard-ui/util"
 )
 
 type JsonDB struct {
@@ -93,8 +94,8 @@ func (o *JsonDB) Init() error {
 	// user info
 	if _, err := os.Stat(userPath); os.IsNotExist(err) {
 		user := new(model.User)
-		user.Username = util.DefaultUsername
-		user.Password = util.DefaultPassword
+		user.Username = util.GetCredVar(util.UsernameEnvVar, util.DefaultUsername)
+		user.Password = util.GetCredVar(util.PasswordEnvVar, util.DefaultPassword)
 		o.conn.Write("server", "users", user)
 	}
 
diff --git a/templates/clients.html b/templates/clients.html
index 0b5f9df..5d22ebf 100644
--- a/templates/clients.html
+++ b/templates/clients.html
@@ -41,10 +41,10 @@ Wireguard Clients
             </div>
             <form name="frm_email_client" id="frm_email_client">
                 <div class="modal-body">
-                    <input type="hidden" id="_client_email_id" name="_client_email_id">
+                    <input type="hidden" id="e_client_id" name="e_client_id">
                     <div class="form-group">
-                        <label for="_client_email_email" class="control-label">Email</label>
-                        <input type="text" class="form-control" id="_client_email_email" name="client_email_email">
+                        <label for="e_client_email" class="control-label">Email</label>
+                        <input type="text" class="form-control" id="e_client_email" name="client_email">
                     </div>
                 </div>
                 <div class="modal-footer justify-content-between">
@@ -340,8 +340,8 @@ Wireguard Clients
 
         // submitEmailClient function for sending an email to the client with the configuration
         function submitEmailClient() {
-            const client_id = $("#_client_email_id").val();
-            const email = $("#_client_email_email").val();
+            const client_id = $("#e_client_id").val();
+            const email = $("#e_client_email").val();
             const data = {"id": client_id, "email": email};
             $.ajax({
                 cache: false,
@@ -429,8 +429,8 @@ Wireguard Clients
                     const client = resp.Client;
 
                     modal.find(".modal-title").text("Email Client " + client.name);
-                    modal.find("#_client_id").val(client.id);
-                    modal.find("#_client_email").val(client.email);
+                    modal.find("#e_client_id").val(client.id);
+                    modal.find("#e_client_email").val(client.email);
                 },
                 error: function (jqXHR, exception) {
                     const responseJson = jQuery.parseJSON(jqXHR.responseText);
diff --git a/util/config.go b/util/config.go
index a2e0297..acdb720 100644
--- a/util/config.go
+++ b/util/config.go
@@ -21,4 +21,6 @@ const (
 	DefaultMTU                 = 1450
 	DefaultPersistentKeepalive = 15
 	DefaultConfigFilePath      = "/etc/wireguard/wg0.conf"
+	UsernameEnvVar             = "WGUI_USERNAME"
+	PasswordEnvVar             = "WGUI_PASSWORD"
 )
diff --git a/util/util.go b/util/util.go
index 09e5fd9..5d3805e 100644
--- a/util/util.go
+++ b/util/util.go
@@ -368,3 +368,11 @@ func WriteWireGuardServerConfig(tmplBox *rice.Box, serverConfig model.Server, cl
 
 	return nil
 }
+
+// GetCredVar reads value from environment variable or returns fallback
+func GetCredVar(key, fallback string) string {
+	if value, ok := os.LookupEnv(key); ok {
+		return value
+	}
+	return fallback
+}