flask-app-docker-testing

Dockerfile

# Base image (OS)
FROM python:3.7

# Working directory
WORKDIR /app

# Copy src code to container
COPY . .

# Run the build commands
RUN pip install -r requirements.txt

# expose port 80
EXPOSE 80

# server the app / run the app (keep it running)
# CMD ["python","run.py"]
ENTRYPOINT ["python","run.py"]

Dockerfile-multi- method-1

# Build Stage
FROM python:3.7 AS builder
WORKDIR /app

# Copy dependency file first for efficient caching
COPY requirements.txt .
RUN pip install --no-cache-dir -r requirements.txt --target=/app/deps

# Copy application source code
COPY . .

# Final Distroless Stage
FROM gcr.io/distroless/python3-debian11
WORKDIR /app

# Copy dependencies from the builder stage
COPY --from=builder /app/deps /app/deps
COPY --from=builder /app .

# Set environment variables
ENV PYTHONUNBUFFERED=1
ENV PYTHONPATH="/app/deps"

# Expose the application port
EXPOSE 80

# Run the application
CMD ["run.py"]

Dockerfile-multi- method-2

# ------------------- Stage 1: Build Stage ------------------------------
FROM python:3.7 AS builder

# Working directory
WORKDIR /app

# Copy dependency file first for efficient caching
COPY requirements.txt .

# Install build dependencies
RUN pip install -r requirements.txt

# ------------------- Stage 2: Final Stage ------------------------------
FROM python:3.7-slim

# Working directory
WORKDIR /app

# Copy dependencies from the builder stage
COPY --from=builder /usr/local/lib/python3.7/site-packages/ /usr/local/lib/python3.7/site-packages/
COPY . .

# Expose the application port
EXPOSE 80

# Run the application
ENTRYPOINT ["python", "run.py"]