Add Public Docker Image and Build Pipeline using Github Actions (#546)

* feat: github action to build and push to dockerhub on release

* feat: docker repo and quickstart readmne

* fix: check for NEXTAUTH_SECRET in dockerfile before running

* fix: check for NEXTAUTH_SECRET as null or not

* add deployment guide

---------

Co-authored-by: Matthias Nannt <mail@matthiasnannt.com>

docker/README.md

@@ -0,0 +1,45 @@
+# Formbricks Quickstart Using Docker
+
+Follow the instructions below to quickly get Formbricks running on your system with Docker. This guide is designed for most users who want a straightforward setup process.
+
+1. **Create a New Directory for Formbricks**
+
+   Open a terminal and create a new directory for Formbricks, then navigate into this new directory:
+
+   \```bash
+   mkdir formbricks-quickstart && cd formbricks-quickstart
+   \```
+
+2. **Download the Docker-Compose File**
+
+   Download the docker-compose file directly from the Formbricks repository:
+
+   \```bash
+   curl -o docker-compose.yml https://raw.githubusercontent.com/formbricks/formbricks/docker/main/docker-compose.yml
+   \```
+
+3. **Generate NextAuth Secret**
+
+   Next, you need to generate a NextAuth secret. This will be used for session signing and encryption. The `sed` command below generates a random string using `openssl`, then replaces the `NEXTAUTH_SECRET:` placeholder in the `docker-compose.yml` file with this generated secret:
+
+   \```bash
+   sed -i "/NEXTAUTH_SECRET:$/s/NEXTAUTH_SECRET:.\*/NEXTAUTH_SECRET: $(openssl rand -base64 32)/" docker-compose.yml
+   \```
+
+4. **Start the Docker Setup**
+
+   You're now ready to start the Formbricks Docker setup. The following command will start Formbricks together with a postgreSQL database using Docker Compose:
+
+   \```bash
+   docker compose up -d
+   \```
+
+   The `-d` flag will run the containers in detached mode, meaning they'll run in the background.
+
+5. **Visit Formbricks in Your Browser**
+
+   After starting the Docker setup, visit http://localhost:3000 in your browser to interact with the Formbricks application. The first time you access this page, you'll be greeted by a setup wizard. Follow the prompts to define your first user and get started.
+
+Enjoy using Formbricks!
+
+Note: For detailed documentation of local setup, take a look at our [self hosting docs](https://formbricks.com/docs/self-hosting/deployment)

docker/docker-compose.yml

@@ -0,0 +1,45 @@
+version: "3.3"
+x-environment: &environment
+  environment:
+    ########################################################################
+    # ------------ MANDATORY (CHANGE ACCORDING TO YOUR SETUP) ------------#
+    ########################################################################
+
+    # PostgreSQL DB for Formbricks to connect to
+    DATABASE_URL: "postgresql://postgres:postgres@postgres:5432/formbricks?schema=public"
+
+    # Uncomment to enable a dedicated connection pool for Prisma using Prisma Data Proxy
+    # Cold boots will be faster and you'll be able to scale your DB independently of your app.
+    # @see https://www.prisma.io/docs/data-platform/data-proxy/use-data-proxy
+    # PRISMA_GENERATE_DATAPROXY=true
+    PRISMA_GENERATE_DATAPROXY:
+
+    # NextJS Auth
+    # @see: https://next-auth.js.org/configuration/options#nextauth_secret
+    # You can use: `openssl rand -base64 32` to generate one
+    NEXTAUTH_SECRET:
+    # Set this to your public-facing URL, e.g., https://example.com
+    # You do not need the NEXTAUTH_URL environment variable in Vercel.
+    NEXTAUTH_URL: http://localhost:3000
+
+services:
+  postgres:
+    restart: always
+    image: postgres:15-alpine
+    volumes:
+      - postgres:/var/lib/postgresql/data
+    environment:
+      - POSTGRES_PASSWORD=postgres
+
+  formbricks:
+    restart: always
+    image: formbricks/formbricks:latest
+    depends_on:
+      - postgres
+    ports:
+      - 3000:3000
+    <<: *environment
+
+volumes:
+  postgres:
+    driver: local