inital working image, python 3.8

Author: Craig

.gitignore

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+.idea
+.DS_Store

Dockerfile

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+FROM python:3.8-slim
 
+RUN pip install pip waitress --upgrade
+
+COPY ./scripts/entrypoint.sh /entrypoint.sh
+RUN chmod +x /entrypoint.sh
+
+COPY ./scripts/run.sh /run.sh
+RUN chmod +x /run.sh
+
+COPY ./app /app
+WORKDIR /app/
+
+ENV PYTHONPATH=/app
+
+EXPOSE 80
+
+ENTRYPOINT ["/entrypoint.sh"]
+
+CMD ["/run.sh"]

README.md

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-# docker-python-waitress
+# Docker Python Waitress
+
+Docker container to run a WSGI Python app using Waitress.

app/bootstrap.sh

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+#!/bin/bash
+
+echo "Prestart script"

app/main.py

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+import sys
+
+
+def app(env, start_response):
+    version = f"{sys.version_info.major}.{sys.version_info.minor}"
+    start_response("200 OK", [("Content-Type", "text/plain")])
+    message = f"Waitress serving up Python {version} in a Docker container"
+    return [message.encode("utf-8")]

scripts/entrypoint.sh

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+#!/bin/bash
+
+set -e
+
+if [ -f /app/app/main.py ]; then
+    DEFAULT_MODULE_NAME=app.main
+elif [ -f /app/main.py ]; then
+    DEFAULT_MODULE_NAME=main
+fi
+MODULE_NAME=${MODULE_NAME:-$DEFAULT_MODULE_NAME}
+VARIABLE_NAME=${VARIABLE_NAME:-app}
+export APP_MODULE=${APP_MODULE:-"$MODULE_NAME:$VARIABLE_NAME"}
+
+exec "$@"

scripts/run.sh

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+#!/bin/bash
+
+set -e
+
+# If there's a prestart.sh script in the /app directory, run it before starting
+PRE_START_PATH=/app/prestart.sh
+echo "Checking for script in $PRE_START_PATH"
+if [ -f $PRE_START_PATH ] ; then
+    echo "Running script $PRE_START_PATH"
+    . "$PRE_START_PATH"
+else
+    echo "There is no script $PRE_START_PATH"
+fi
+
+params="--listen=*:80"
+
+if [[ -v WAITRESS_THREADS ]]; then
+  params=" $params --thread=$WAITRESS_THREADS"
+fi
+if [[ -v WAITRESS_IDENT ]]; then
+  params=" $params --ident=$WAITRESS_IDENT"
+fi
+if [[ -v WAITRESS_OUTBUF_OVERFLOW ]]; then
+  params=" $params --outbuf_overflow=$WAITRESS_OUTBUF_OVERFLOW"
+fi
+if [[ -v WAITRESS_OUTBUF_HIGH_WATERMARK ]]; then
+  params=" $params --outbuf_high_watermark=$WAITRESS_OUTBUF_HIGH_WATERMARK"
+fi
+if [[ -v WAITRESS_INBUF_OVERFLOW ]]; then
+  params=" $params --inbuf_overflow=$WAITRESS_INBUF_OVERFLOW"
+fi
+if [[ -v WAITRESS_CONNECTION_LIMIT ]]; then
+  params=" $params --connection_limit=$WAITRESS_CONNECTION_LIMIT"
+fi
+if [[ -v WAITRESS_MAX_REQUEST_HEADER_SIZE ]]; then
+  params=" $params --max_request_header_size=$WAITRESS_MAX_REQUEST_HEADER_SIZE"
+fi
+if [[ -v WAITRESS_MAX_REQUEST_BODY_SIZE ]]; then
+  params=" $params --max_request_body_size=$WAITRESS_MAX_REQUEST_BODY_SIZE"
+fi
+if [[ -v WAITRESS_EXPOSE_TRACEBACKS ]]; then
+  params=" $params --expose_tracebacks=$WAITRESS_EXPOSE_TRACEBACKS"
+fi
+if [[ -v WAITRESS_ASYNCORE_LOOP_TIMEOUT ]]; then
+  params=" $params --asyncore_loop_timeout=$WAITRESS_ASYNCORE_LOOP_TIMEOUT"
+fi
+if [[ -v WAITRESS_ASYNCORE_USE_POLL ]]; then
+  params=" $params --asyncore_use_poll=$WAITRESS_ASYNCORE_USE_POLL"
+fi
+
+# Start Waitress
+exec waitress-serve $params $APP_MODULE