diff --git a/Dockerfile b/Dockerfile
index 1e9cebc..1d08804 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,11 +1,9 @@
-FROM node:18-alpine3.17
-
-# Installing yarn
-RUN apt update -y && \ 
-    apt install yarn=v1.22.4 -v -y
+FROM node:18-bullseye-slim
 
 USER node:node
 
+WORKDIR /home/node
+
 # Server environmental variables will be put into server/.env
 ENV MAILGUN_API_KEY=api-key \
     MAILGUN_DOMAIN=darkwire.io \
@@ -22,11 +20,11 @@ ENV TZ=UTC \
     VITE_API_PROTOCOL=http \
     VITE_API_PORT=3001 \
     VITE_COMMIT_SHA=some_sha \
-    VITE_MAX_FILE_SIZE=4 
+    VITE_MAX_FILE_SIZE=4
 
 COPY --chown=node:node . .
 
-RUN yarn build
+RUN yarn && yarn build
 
 STOPSIGNAL SIGINT
 EXPOSE 3001
diff --git a/app.json b/app.json
index 971527b..042fb5b 100644
--- a/app.json
+++ b/app.json
@@ -50,8 +50,5 @@
       "required": false
     }
   },
-  "image": "heroku/nodejs",
-  "addons": [
-    "heroku-redis"
-  ]
+  "image": "heroku/nodejs"
 }
\ No newline at end of file
diff --git a/client/src/main.tsx b/client/src/main.tsx
index 7d288be..6dfd446 100644
--- a/client/src/main.tsx
+++ b/client/src/main.tsx
@@ -12,6 +12,7 @@ import 'bootstrap/dist/js/bootstrap.bundle.min.js';
 import configureStore from '@/store/';
 import Home from '@/components/Home/';
 import { hasTouchSupport } from '@/utils/dom';
+import { AlertTriangle } from 'react-feather';
 
 const store = configureStore();
 
@@ -45,6 +46,11 @@ const Main = () => {
 
 const root = createRoot(document.getElementById('root') as HTMLElement);
 
+if (!window.crypto || !window.crypto.subtle) {
+  window.alert("You must access Darkwire from a secure HTTPS connection.")
+  throw new Error("You must access Darkwire from a secure HTTPS connection.")
+}
+
 root.render(
   <React.StrictMode>
     <Main />
diff --git a/client/src/utils/crypto.js b/client/src/utils/crypto.js
index dd9f812..5bb9fa5 100644
--- a/client/src/utils/crypto.js
+++ b/client/src/utils/crypto.js
@@ -3,7 +3,7 @@ export default class Crypto {
     this._crypto = window.crypto || false;
 
     if (!this._crypto || (!this._crypto.subtle && !this._crypto.webkitSubtle)) {
-      return false;
+      return false
     }
   }
 
diff --git a/client/vite.config.ts b/client/vite.config.ts
index db6aff4..460b8c2 100644
--- a/client/vite.config.ts
+++ b/client/vite.config.ts
@@ -18,4 +18,7 @@ export default defineConfig({
   resolve: {
     alias: [{ find: '@', replacement: resolve(projectRootDir, 'src') }],
   },
+  build:{
+    chunkSizeWarningLimit: 1000
+  }
 });
diff --git a/docker-compose.yaml b/docker-compose.yaml
index b692286..90f2f58 100644
--- a/docker-compose.yaml
+++ b/docker-compose.yaml
@@ -1,9 +1,5 @@
 version: '3.0'
 services:
-  redis:
-    image: redis:6.0.6
-    networks:
-      - db
   darkwire.io:
     build:
       context: .
diff --git a/readme.md b/readme.md
index b719190..29d1a1c 100644
--- a/readme.md
+++ b/readme.md
@@ -8,7 +8,7 @@ Simple encrypted web chat. Powered by [socket.io](http://socket.io), the [web cr
 
 ### Darkwire Server
 
-[Darkwire server](/server) is a Node.js application that requires redis.
+[Darkwire server](/server) is a Node.js application.
 
 ### Darkwire Web Client
 
@@ -21,19 +21,20 @@ The Darkwire.io [web client](/client) is written in JavaScript with React JS and
 Copy `.env.dist` files in `server/` and `client/` directories without the `.dist`
 extensions and adapt them to your needs.
 
-You need [Redis](https://redis.io/) in order to make the server works.
-A simple way to achieve this, if you have docker, is to execute the following
-command:
+You must have a https connection for Darkwire to work because it's using crypto browser
+API which is accessible only on localhost and behind a https connection.
+
+
+#### Manual setup
+
+You can use nvm to install the right version of node using this command:
 
 ```
-docker run --name darkwire-redis --rm -p 6379:6379 -d redis redis-server --appendonly yes
+nvm install # If not already installed
+nvm use
+npm install yarn -g
 ```
 
-Alternatively, you can select the _memory_ `STORE_BACKEND` instead of _redis_
-in your server `.env` file to avoid Redis use.
-
-#### Setup
-
 Install dependencies
 
 ```
@@ -55,7 +56,7 @@ Just run the following:
 $ docker-compose up
 ```
 
-This will automatically create the default `.env` files, and run redis for you.
+This will automatically create the default `.env` files for you.
 
 ### Production
 
@@ -82,7 +83,7 @@ $ docker build --tag darkwire.io:latest .
 Then run it. Example:
 
 ```
-$ docker run --name darkwire.io --env STORE_HOST=redis://redis.host:6379 darkwire.io
+$ docker run --init --name darkwire.io --rm -p 3001:3001 darkwire.io
 ```
 
 You are able to use any of the enviroment variables available in `server/.env.dist` and `client/.env.dist`. The defaults are available in [Dockerfile](Dockerfile)