Dockerfile

FROM python:3.13-alpine

LABEL org.opencontainers.image.source=https://github.com/CDCgov/RecordLinker
LABEL org.opencontainers.image.description="RecordLinker is a service that links records from two datasets based on a set of common attributes."
LABEL org.opencontainers.image.licenses=Apache-2.0

# Set the environment variable to prod by default
ARG ENVIRONMENT=prod
ENV ENVIRONMENT=${ENVIRONMENT}
# Set the port variable to 8080 by default
ARG PORT=8080
ENV PORT=${PORT}
# Set the USE_MSSQL env variable to true to enable SQL Server support
ARG USE_MSSQL=true
ENV USE_MSSQL=${USE_MSSQL}
# Set the USE_OTEL env variable to true to enable OpenTelemetry
ARG USE_OTEL=false
ENV USE_OTEL=${USE_OTEL}
# Set default log config
ARG LOG_CONFIG=assets/production_log_config.json
ENV LOG_CONFIG=${LOG_CONFIG}

# Upgrade system packages and install curl, and packages required for pyodbc installation on Alpine
RUN apk update && apk upgrade && apk add build-base python3-dev freetds freetds-dev unixodbc-dev linux-headers --no-cache  curl
RUN pip install --upgrade pip

# Conditionally install ODBC driver for SQL Server.
RUN if [ "$USE_MSSQL" = "true" ]; then \
    apk add --no-cache freetds-dev unixodbc-dev && \
    printf "[ODBC Driver 18 for SQL Server]\nDescription=Backwards compatible driver connection\nDriver=/usr/lib/libtdsodbc.so\nUsageCount=1\n\n" > /etc/odbcinst.ini && \
    printf "[FreeTDS]\nDescription=FreeTDS Driver\nDriver=/usr/lib/libtdsodbc.so\nUsageCount=1\n" >> /etc/odbcinst.ini; \
  fi

WORKDIR /code
# Initialize the recordlinker directory
RUN mkdir -p /code/src/recordlinker

# Copy over just the pyproject.toml file and install the dependencies doing this
# before copying the rest of the code allows for caching of the dependencies
COPY ./pyproject.toml /code/pyproject.toml
RUN pip install "$(printf '%s' ".[${ENVIRONMENT}]")"

# Conditionally install OpenTelemetry packages if USE_OTEL is true
RUN if [ "$USE_OTEL" = "true" ]; then \
        pip install opentelemetry-distro opentelemetry-exporter-otlp && \
        opentelemetry-bootstrap -a install; \
    fi

# Copy over the rest of the code
COPY ./src /code/src
COPY ./docs /code/docs
COPY ./migrations /code/migrations
COPY README.md /code/README.md

EXPOSE ${PORT}

# Create an entrypoint script
RUN echo '#!/bin/sh' > /entrypoint.sh && \
    echo 'exec uvicorn recordlinker.main:app --app-dir src --host 0 --port "$PORT"' >> /entrypoint.sh && \
    chmod +x /entrypoint.sh

ENTRYPOINT ["/entrypoint.sh"]