fix: Simplify Dockerfile to single-stage with tsx runtime

worker/Dockerfile

@@ -1,33 +1,19 @@
-### Multi-stage build: compile TypeScript in a builder image, produce a smaller runtime image
+### Single-stage build: Run worker with tsx TypeScript runtime
 ### IMPORTANT: Dokploy must set dockerContextPath="." (repo root) in database
-### This allows the build to access package.json and other files from repo root
 ### Dockerfile path should be "worker/Dockerfile"
 
-FROM node:20 AS builder
+FROM node:20-alpine AS runtime
 WORKDIR /usr/src/app
 
-# Copy package manifests and install all deps (including dev) for build
+# Install production dependencies AND tsx for TypeScript runtime
 COPY package.json package-lock.json ./
-RUN npm ci --silent
+RUN npm ci --production --silent && npm install tsx dotenv --silent
 
-# Copy entire project and compile TypeScript
-COPY . .
-# Try to compile the project; if there is no TS config for worker, keep files as-is
-RUN npx tsc -p tsconfig.json --outDir dist || echo "tsc exit code ignored"
-
-FROM node:20-alpine AS runner
-WORKDIR /usr/src/app
-
-# Install only production dependencies
-COPY package.json package-lock.json ./
-RUN npm ci --production --silent
-
-# Copy compiled output from builder (if present) and essential runtime files
-COPY --from=builder /usr/src/app/dist ./dist
-COPY --from=builder /usr/src/app/worker ./worker
-COPY --from=builder /usr/src/app/lib ./lib
+# Copy worker code and shared lib
+COPY worker ./worker
+COPY lib ./lib
 
 ENV NODE_ENV=production
 
-# If compiled JS exists, run compiled entrypoint; otherwise fallback to tsx runtime
-CMD ["sh", "-c", "if [ -f ./dist/worker/index.js ]; then node ./dist/worker/index.js; else npx tsx ./worker/index.ts; fi"]
+# Run worker using tsx (TypeScript runtime)
+CMD ["npx", "tsx", "./worker/index.ts"]