build: fix Docker image build and add Docker Hub compose

Dockerfile

@@ -6,7 +6,16 @@
 FROM node:22-bookworm-slim AS deps
 WORKDIR /app
 
+ENV NEXT_TELEMETRY_DISABLED=1
+
+# Prisma needs OpenSSL available during generate.
+RUN apt-get update \
+  && apt-get install -y --no-install-recommends openssl ca-certificates \
+  && rm -rf /var/lib/apt/lists/*
+
+# Copy Prisma schema before npm ci because package.json postinstall runs `prisma generate`.
 COPY package.json package-lock.json ./
+COPY prisma ./prisma
 RUN npm ci --no-audit --no-fund
 
 # -----------------------------
@@ -17,7 +26,13 @@ WORKDIR /app
 
 ENV NEXT_TELEMETRY_DISABLED=1
 
+RUN apt-get update \
+  && apt-get install -y --no-install-recommends openssl ca-certificates \
+  && rm -rf /var/lib/apt/lists/*
+
 COPY --from=deps /app/node_modules ./node_modules
+COPY --from=deps /app/package.json ./package.json
+COPY --from=deps /app/package-lock.json ./package-lock.json
 COPY . .
 
 RUN npx prisma generate
@@ -34,7 +49,10 @@ ENV NEXT_TELEMETRY_DISABLED=1
 ENV PORT=6767
 ENV HOSTNAME=0.0.0.0
 
-RUN groupadd --system --gid 1001 nodejs \
+RUN apt-get update \
+  && apt-get install -y --no-install-recommends openssl ca-certificates \
+  && rm -rf /var/lib/apt/lists/* \
+  && groupadd --system --gid 1001 nodejs \
   && useradd --system --uid 1001 --gid nodejs nextjs
 
 # Next.js standalone output

README.md

@@ -231,30 +231,17 @@ http://localhost:6767
 
 Docker is the recommended deployment path for most users.
 
-### 1. Clone the repository
+### Option A: Use the published Docker Hub image
+
+After the image is published to Docker Hub, users can run OfflineAcademy without building from source.
 
 ```bash
-git clone https://github.com/YOUR_USERNAME/offlineacademy.git
+mkdir -p offlineacademy/My_Courses offlineacademy/prisma
 cd offlineacademy
-```
-
-### 2. Create `.env`
-
-```bash
-cp .env.example .env
-```
-
-### 3. Create local folders
-
-```bash
-mkdir -p My_Courses prisma
+curl -fsSL -o docker-compose.yml https://raw.githubusercontent.com/nicetry247/offlineacademy/main/docker-compose.hub.yml
+curl -fsSL -o .env https://raw.githubusercontent.com/nicetry247/offlineacademy/main/.env.example
 touch prisma/dev.db
-```
-
-### 4. Start the app
-
-```bash
-docker compose up --build -d
+docker compose up -d
 ```
 
 Open:
@@ -269,9 +256,20 @@ For LAN access, replace `localhost` with your server IP:
 http://YOUR_SERVER_IP:6767
 ```
 
+### Option B: Build locally from source
+
+```bash
+git clone https://github.com/nicetry247/offlineacademy.git
+cd offlineacademy
+cp .env.example .env
+mkdir -p My_Courses prisma
+touch prisma/dev.db
+docker compose up --build -d
+```
+
 ### Custom Course Folder
 
-You can store courses anywhere on the host. Update `docker-compose.yml` and map your folder to `/app/My_Courses` inside the container:
+You can store courses anywhere on the host. Update your Compose file and map your folder to `/app/My_Courses` inside the container:
 
 ```yaml
 volumes:
@@ -292,6 +290,25 @@ Examples:
 - C:/Users/you/Videos/Courses:/app/My_Courses
 ```
 
+### Publishing to Docker Hub
+
+Maintainers can publish manually:
+
+```bash
+docker login
+docker build -t nicetry247/offlineacademy:latest .
+docker push nicetry247/offlineacademy:latest
+```
+
+You can also automate Docker Hub publishing later with GitHub Actions. To do that, add repository secrets for:
+
+```text
+DOCKERHUB_USERNAME
+DOCKERHUB_TOKEN
+```
+
+Then add a workflow that builds and pushes `nicetry247/offlineacademy:latest` on pushes to `main` and version tags like `v1.0.0`.
+
 ---
 
 ## Configuration

docker-compose.hub.yml

@@ -0,0 +1,23 @@
+services:
+  offlineacademy:
+    image: nicetry247/offlineacademy:latest
+    container_name: offlineacademy
+    restart: unless-stopped
+    ports:
+      - "6767:6767"
+    env_file:
+      - .env
+    environment:
+      NODE_ENV: production
+      PORT: 6767
+      HOSTNAME: 0.0.0.0
+      DATABASE_URL: file:./dev.db
+      COURSES_ROOT: ./My_Courses
+      NEXT_PUBLIC_APP_URL: http://localhost:6767
+    volumes:
+      # Put your course folders wherever you want on the host,
+      # then map that folder to /app/My_Courses inside the container.
+      - ./My_Courses:/app/My_Courses
+
+      # Persist the SQLite database outside the image.
+      - ./prisma/dev.db:/app/prisma/dev.db