Bugfix/Update worker docker (#4643)

update worker docker

docker/worker/Dockerfile

@@ -0,0 +1,49 @@
+FROM node:20-alpine
+
+RUN apk add --update libc6-compat python3 make g++
+# needed for pdfjs-dist
+RUN apk add --no-cache build-base cairo-dev pango-dev
+
+# Install Chromium and curl for container-level health checks
+RUN apk add --no-cache chromium curl
+
+#install PNPM globaly
+RUN npm install -g pnpm
+
+ENV PUPPETEER_SKIP_DOWNLOAD=true
+ENV PUPPETEER_EXECUTABLE_PATH=/usr/bin/chromium-browser
+
+ENV NODE_OPTIONS=--max-old-space-size=8192
+
+WORKDIR /usr/src
+
+# Copy app source
+COPY . .
+
+RUN pnpm install
+
+RUN pnpm build
+
+# --- Healthcheck Setup ---
+
+WORKDIR /app/healthcheck
+
+COPY docker/worker/healthcheck/package.json . 
+
+RUN npm install --omit=dev
+
+COPY docker/worker/healthcheck/healthcheck.js .
+
+# --- End Healthcheck Setup ---
+
+# Set the main working directory back
+WORKDIR /usr/src
+
+# Environment variables for port configuration
+ENV WORKER_PORT=5566
+
+# Expose port (can be overridden by env var)
+EXPOSE ${WORKER_PORT}
+
+# Start healthcheck in background and flowise worker in foreground
+CMD ["/bin/sh", "-c", "node /app/healthcheck/healthcheck.js & sleep 5 && pnpm run start-worker"]