feat(ws): containerize frontend component (#394)

Signed-off-by: Noa <nlimoy@redhat.com>

workspaces/frontend/.dockerignore

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+dist/
+node_modules/

workspaces/frontend/Dockerfile

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+# ---------- Builder stage ----------
+FROM node:20-slim AS builder
+
+# Set working directory
+WORKDIR /usr/src/app
+
+# Copy package files to the container
+COPY package*.json ./
+
+# Install the dependencies and build
+RUN npm cache clean --force \
+  && npm ci
+
+# Copy source code
+COPY . .
+
+# Build the application
+RUN npm run build:prod
+
+
+# ---------- Production stage ----------
+FROM nginx:alpine
+
+USER root
+
+# Install envsubst (gettext package)
+RUN apk add --no-cache gettext
+
+# Copy built assets from builder stage
+COPY --from=builder /usr/src/app/dist /usr/share/nginx/html
+
+# Copy nginx config
+COPY nginx.conf /etc/nginx/nginx.conf
+
+# Create directories and set permissions for non-root user
+RUN mkdir -p /var/cache/nginx/client_temp \
+             /var/cache/nginx/proxy_temp \
+             /var/cache/nginx/fastcgi_temp \
+             /var/cache/nginx/uwsgi_temp \
+             /var/cache/nginx/scgi_temp \
+             /var/run/nginx \
+             /tmp/nginx && \
+    # Change ownership of nginx directories to nginx user (UID 101)
+    chown -R 101:101 /var/cache/nginx \
+                     /var/run/nginx \
+                     /usr/share/nginx/html \
+                     /tmp/nginx \
+                     /etc/nginx
+
+# Switch to nginx user (UID 101)
+USER 101:101
+
+# Expose port
+EXPOSE 8080
+
+# Set environment variables
+ENV PORT=8080
+
+# Start the production server
+CMD ["nginx", "-g", "daemon off;"]

workspaces/frontend/nginx.conf

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+worker_processes  auto;
+
+error_log  /dev/stderr warn;
+pid        /tmp/nginx.pid;
+
+events {
+    worker_connections 1024;
+}
+
+http {
+    log_format  main  '$remote_addr - $remote_user [$time_local] - $http_x_api_version - "$request" '
+                      '$status $body_bytes_sent "$http_referer" '
+                      '"$http_user_agent" "$http_x_forwarded_for"';
+
+    access_log  /dev/stdout  main;
+
+    include       /etc/nginx/mime.types;
+    default_type  application/octet-stream;
+
+    # Temporary file paths for non-root user
+    client_body_temp_path /var/cache/nginx/client_temp;
+    proxy_temp_path /var/cache/nginx/proxy_temp;
+    fastcgi_temp_path /var/cache/nginx/fastcgi_temp;
+    uwsgi_temp_path /var/cache/nginx/uwsgi_temp;
+    scgi_temp_path /var/cache/nginx/scgi_temp;
+
+    # Security headers
+    add_header X-Frame-Options "SAMEORIGIN" always;
+    add_header X-XSS-Protection "1; mode=block" always;
+    add_header X-Content-Type-Options "nosniff" always;
+    add_header Referrer-Policy "no-referrer-when-downgrade" always;
+    add_header Content-Security-Policy "default-src 'self' http: https: data: blob: 'unsafe-inline'" always;
+
+    # Gzip Compression
+    gzip on;
+    gzip_types text/plain text/css application/json application/javascript text/xml application/yaml application/xml application/xml+rss text/javascript image/svg+xml;
+    gzip_comp_level 5;
+    gzip_min_length 1000;
+    gzip_proxied any;
+    gzip_vary on;
+    gzip_disable "msie6";
+
+    server {
+        listen       8080;
+
+        # Health check endpoint
+        location /health {
+            access_log off;
+            return 200 'healthy\n';
+        }
+
+        location / {
+            root   /usr/share/nginx/html;
+            index  index.html;
+            try_files $uri $uri/ /index.html;
+        }
+
+        # Static assets (cache enabled)
+        location ~* \.(css|js|gif|jpeg|jpg|png|ico|woff|woff2|ttf|otf|svg|eot)$ {
+            root   /usr/share/nginx/html;
+            expires 30d;
+            add_header Cache-Control "public, no-transform";
+            try_files $uri =404;
+        }
+    }
+}