dockerfile

FROM python:3.11-slim

WORKDIR /app

# Copy and install dependencies
COPY requirements.txt ./
RUN pip install --no-cache-dir -r requirements.txt

# Copy application code into worker_versioning package
# This creates /app/worker_versioning/ directory structure
COPY . ./worker_versioning/

# Environment variables (will be overridden by K8s)
ENV TEMPORAL_ADDRESS="localhost:7233"
ENV TEMPORAL_NAMESPACE="default"
ENV TEMPORAL_TASK_QUEUE="worker-versioning"

# Worker versioning - these are injected by Temporal Worker Controller
# TEMPORAL_WORKER_BUILD_ID - Set by TWC or via env var
# TEMPORAL_DEPLOYMENT_NAME - Set by TWC or via env var
ENV TEMPORAL_WORKER_BUILD_ID="1.0"
ENV TEMPORAL_DEPLOYMENT_NAME="my-deployment"

# Run the unified worker (Approach 2: Environment-Driven)
# The same image works for all versions - Build ID is set via environment
CMD ["python", "-m", "worker_versioning.worker"]

# ============================================================================
# ALTERNATIVE: Approach 1 (Separate Worker Files)
# Uncomment below and comment out the CMD above to use separate worker files
# ============================================================================
# ARG WORKER_MODULE=workerv1
# ENV WORKER_MODULE=${WORKER_MODULE}
# CMD python -m worker_versioning.${WORKER_MODULE}