docker environment variable

Dockerfile

@@ -9,9 +9,6 @@ RUN apt-get install  openssh-server sudo -y
 RUN service ssh start
 #RUN apt-get install -y net-tools
 
-EXPOSE 22
-
-
 COPY assets /var/www/assets
 COPY commands /var/www/commands
 COPY components /var/www/components
@@ -34,3 +31,6 @@ RUN chmod +x /var/www/yii
 
 RUN mv /var/www/config/db-docker.php /var/www/config/db.php
 RUN chown -R www-data:www-data /var/www
+
+EXPOSE 22
+ENV DOCKERCONTAINER=true

components/Seclib.php

@@ -25,7 +25,14 @@ public function execInBackground($cmd)
         if (substr(php_uname(), 0, 7) == "Windows"){
             pclose(popen("start /B ". $cmd, "r"));
         } else {
-            $ssh = new \phpseclib\Net\SSH2('172.18.0.1', 22);
+            // determine whether we are running in a docker container
+            if (isset($_ENV['DOCKERCONTAINER']) && $_ENV['DOCKERCONTAINER'] == true){
+                $host_address = $_SERVER['REMOTE_ADDR'];
+            } else {
+                $host_address = 'localhost';
+            }
+
+            $ssh = new \phpseclib\Net\SSH2($host_address, 22);
             if (!$ssh->login(WebApp::decrypt(Settings::load()->sshuser), WebApp::decrypt(Settings::load()->sshpassword))) {
                 return array('error' => 'Login to localhost server failed');
             }

docker-compose.yml

@@ -1,6 +1,6 @@
 version: '3'
 services:
-  yii2-php:
+  yii2:
     #image: yiisoftware/yii2-php:7.2-apache
     build: .
     volumes:

web/phpinfo.php

@@ -0,0 +1,3 @@
+<?php
+
+phpinfo(); ?>