diff --git a/Dockerfile b/Dockerfile
index 0364085a..ef4f0767 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -5,9 +5,15 @@ RUN mkdir -p /usr/src/app
 WORKDIR /usr/src/app
 
 COPY package.json /usr/src/app/
-RUN npm install --production
+
+RUN npm install --production && \
+    npm i gritty
+
 COPY . /usr/src/app
 
+ENV cloudcmd_terminal true
+ENV cloudcmd_terminal_path gritty
+
 EXPOSE 8000
 
 ENTRYPOINT ["bin/cloudcmd.js"]
diff --git a/Dockerfile.alpine b/Dockerfile.alpine
index 97e3540e..636aacf2 100644
--- a/Dockerfile.alpine
+++ b/Dockerfile.alpine
@@ -5,9 +5,26 @@ RUN mkdir -p /usr/src/app
 WORKDIR /usr/src/app
 
 COPY package.json /usr/src/app/
-RUN npm install --production
+
+RUN npm install --production && \
+    apk add --no-cache git bash make g++ python && \
+    npm i node-pty@">0.6.2" || \
+        (cd node_modules && \
+        git clone https://github.com/Tyriar/node-pty && \
+        cd node-pty && \
+        npm i && npm run tsc && \
+        npm run install && \
+        rm -rf .git && \
+        cd ../..) && \
+    npm i gritty && \
+    apk del git make g++ python && \
+    rm -rf /usr/include /tmp/* /var/cache/apk/*
+
 COPY . /usr/src/app
 
+ENV cloudcmd_terminal true
+ENV cloudcmd_terminal_path gritty
+
 EXPOSE 8000
 
 ENTRYPOINT ["bin/cloudcmd.js"]
diff --git a/HELP.md b/HELP.md
index 1f03922f..d9e818a2 100644
--- a/HELP.md
+++ b/HELP.md
@@ -322,6 +322,13 @@ Here is description of options:
 }
 ```
 
+### Environment Variables
+
+Some config options can be overriden with `environment variables` such:
+
+- `CLOUDCMD_TERMINAL` - enable terminal
+- `CLOUDCMD_TERMINAL_PATH` - set terminal path
+
 Menu
 ---------------
 ![Menu](/img/screen/menu.png "Menu")
diff --git a/app.json b/app.json
index 841b3bef..f184be78 100644
--- a/app.json
+++ b/app.json
@@ -16,6 +16,16 @@
           "description": "Keep false to install devDependencies and build frontend",
           "value": "false",
           "required": false
+      },
+      "CLOUDCMD_TERMINAL": {
+          "description": "enable terminal",
+          "value": "true",
+          "required": false
+      },
+      "CLOUDCMD_TERMINAL_PATH": {
+          "description": "set terminal path",
+          "value": "gritty",
+          "required": false
       }
   }
 }
diff --git a/bin/cloudcmd.js b/bin/cloudcmd.js
index cfd2a6aa..c72ed946 100755
--- a/bin/cloudcmd.js
+++ b/bin/cloudcmd.js
@@ -7,6 +7,7 @@ const DIR_SERVER = '../server/';
 
 const exit = require(DIR_SERVER + 'exit');
 const config = require(DIR_SERVER + 'config');
+const env = require(DIR_SERVER + 'env');
 
 const argv = process.argv;
 const args = require('minimist')(argv.slice(2), {
@@ -51,9 +52,9 @@ const args = require('minimist')(argv.slice(2), {
         prefix      : config('prefix') || '',
         progress    : config('progress'),
         console     : config('console'),
-        terminal    : config('terminal'),
+        terminal    : env.bool('terminal') || config('terminal'),
         
-        'terminal-path': config('terminalPath'),
+        'terminal-path': env('terminal_path') || config('terminalPath'),
         'config-dialog': config('configDialog'),
         'one-panel-mode': config('onePanelMode'),
         'html-dialogs': config('htmlDialogs')
@@ -93,7 +94,7 @@ if (args.version) {
     config('progress', args.progress);
     config('console', args.console);
     config('terminal', args.terminal);
-    config('terminalPath', args.terminalPath);
+    config('terminalPath', args['terminal-path']);
     config('editor', args.editor);
     config('prefix', args.prefix);
     config('root', args.root);
diff --git a/package.json b/package.json
index 453649b9..59af4985 100644
--- a/package.json
+++ b/package.json
@@ -97,7 +97,7 @@
     "legacy:help": "cp json/help.json legacy/json/",
     "rm:server": "rimraf server_ legacy",
     "rm:client": "rimraf dist dist-dev",
-    "heroku-postbuild": "redrun 6to5:client -- --progress"
+    "heroku-postbuild": "redrun 6to5:client -- --progress && npm i gritty"
   },
   "directories": {
     "man": "man"
diff --git a/server/env.js b/server/env.js
new file mode 100644
index 00000000..7ccdcc49
--- /dev/null
+++ b/server/env.js
@@ -0,0 +1,15 @@
+'use strict';
+
+const env = process.env;
+const up = (a) => a.toUpperCase();
+
+module.exports = parse;
+module.exports.bool = (name) => Boolean(parse(name));
+
+function parse(name) {
+    const small = `cloudcmd_${name}`;
+    const big = up(small);
+    
+    return env[small] || env[big];
+}
+