Dockerfile

# Use a base image
FROM ubuntu:20.04

# Set environment variable to non-interactive mode
ENV DEBIAN_FRONTEND=noninteractive

# Install PostgreSQL and dependencies
RUN apt-get update && apt-get install -y \
    postgresql postgresql-contrib \
    python3 python3-pip \
    tzdata && \
    rm -rf /var/lib/apt/lists/*

# Reset DEBIAN_FRONTEND
ENV DEBIAN_FRONTEND=interactive

# Set environment variables for PostgreSQL
ENV POSTGRES_DB=mydatabase
ENV POSTGRES_USER=myuser
ENV POSTGRES_PASSWORD=mypassword

# Install application dependencies
COPY requirements.txt /app/requirements.txt
RUN pip3 install -r /app/requirements.txt

# Copy FastAPI application code
COPY app.py /app/app.py

# Set up the PostgreSQL database and user
RUN service postgresql start && \
    su - postgres -c "psql -c \"CREATE USER myuser WITH PASSWORD 'mypassword';\"" && \
    su - postgres -c "createdb mydatabase" && \
    su - postgres -c "psql -c \"GRANT ALL PRIVILEGES ON DATABASE mydatabase TO myuser;\""
    
# Expose PostgreSQL and FastAPI ports
EXPOSE 5432 8080

# Start PostgreSQL and FastAPI app together
CMD service postgresql start && cd app && uvicorn app:app --host 0.0.0.0 --port 8080