initial implementation of Dockerfile

docker/Production/Dockerfile

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+FROM debian:stretch-slim
+LABEL maintainer="k@ndk.name"
+
+ENV LC_ALL=en_US.UTF-8 LANG=en_US.UTF-8 LANGUAGE=en_US.UTF-8
+
+RUN apt-get update -y \
+	&& apt-get install -y --no-install-recommends apt-transport-https locales locales-all python3-pip python3-dev curl libsasl2-dev libldap2-dev libssl-dev libxml2-dev libxslt1-dev libxmlsec1-dev libffi-dev pkg-config build-essential libmariadb-dev-compat \
+    && curl -sL https://deb.nodesource.com/setup_10.x | bash - \
+    && curl -sS https://dl.yarnpkg.com/debian/pubkey.gpg | apt-key add - \
+    && echo "deb https://dl.yarnpkg.com/debian/ stable main" > /etc/apt/sources.list.d/yarn.list \
+    && apt-get install -y nodejs yarn \
+    && apt-get clean -y \
+	&& rm -rf /var/lib/apt/lists/*
+
+WORKDIR /opt/powerdns-admin
+
+COPY . .
+RUN pip3 install -r requirements.txt \
+    && pip3 install psycopg2-binary \
+    && yarn install --pure-lockfile \
+    && flask assets build
+
+COPY ./docker/Production/entrypoint.sh /usr/local/bin/
+
+ENV FLASK_APP=app/__init__.py
+EXPOSE 80/tcp
+ENTRYPOINT ["entrypoint.sh"]
+CMD ["gunicorn", "-t", "120", "--workers", "4", "--bind", "0.0.0.0:80", "--log-level", "info" ,"app:app"]

docker/Production/config_docker.py

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+legal_envvars = (
+    'SECRET_KEY',
+    'BIND_ADDRESS',
+    'PORT',
+    'TIMEOUT',
+    'LOG_LEVEL',
+    'LOG_FILE',
+    'SALT',
+    'UPLOAD_DIR',
+    'SQLALCHEMY_TRACK_MODIFICATIONS',
+    'SQLALCHEMY_DATABASE_URI',
+    'SAML_ENABLED',
+    'SAML_DEBUG',
+    'SAML_PATH',
+    'SAML_METADATA_URL',
+    'SAML_METADATA_CACHE_LIFETIME',
+    'SAML_IDP_SSO_BINDING',
+    'SAML_IDP_ENTITY_ID',
+    'SAML_NAMEID_FORMAT',
+    'SAML_ATTRIBUTE_EMAIL',
+    'SAML_ATTRIBUTE_GIVENNAME',
+    'SAML_ATTRIBUTE_SURNAME',
+    'SAML_ATTRIBUTE_NAME',
+    'SAML_ATTRIBUTE_USERNAME',
+    'SAML_ATTRIBUTE_ADMIN',
+    'SAML_ATTRIBUTE_GROUP',
+    'SAML_GROUP_ADMIN_NAME',
+    'SAML_GROUP_TO_ACCOUNT_MAPPING',
+    'SAML_ATTRIBUTE_ACCOUNT',
+    'SAML_SP_ENTITY_ID',
+    'SAML_SP_CONTACT_NAME',
+    'SAML_SP_CONTACT_MAIL',
+    'SAML_SIGN_REQUEST',
+    'SAML_WANT_MESSAGE_SIGNED',
+    'SAML_LOGOUT',
+    'SAML_LOGOUT_URL',
+)
+
+legal_envvars_int = (
+    'PORT',
+    'TIMEOUT',
+    'SAML_METADATA_CACHE_LIFETIME',
+)
+
+legal_envvars_bool = (
+    'SQLALCHEMY_TRACK_MODIFICATIONS',
+    'SAML_ENABLED',
+    'SAML_DEBUG',
+    'SAML_SIGN_REQUEST',
+    'SAML_WANT_MESSAGE_SIGNED',
+    'SAML_LOGOUT',
+)
+
+# import everything from environment variables
+import os
+import sys
+for v in legal_envvars:
+    if v in os.environ:
+        ret = os.environ[v]
+        if v in legal_envvars_bool:
+            ret = bool(ret)
+        if v in legal_envvars_int:
+            ret = int(ret)
+        sys.modules[__name__].__dict__[v] = ret
+
+

docker/Production/entrypoint.sh

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+#!/bin/bash
+set -Eeuo pipefail
+cd /opt/powerdns-admin
+
+DB_MIGRATION_DIR='./migrations'
+
+if [ ! -f ./config.py ]; then
+    cat ./config_template.py ./docker/Production/config_docker.py > ./config.py
+fi
+
+if [ "$1" == gunicorn ]; then
+    if [ ! -d "${DB_MIGRATION_DIR}" ]; then
+        flask db init --directory ${DB_MIGRATION_DIR}
+        flask db migrate -m "Init DB" --directory ${DB_MIGRATION_DIR}
+        flask db upgrade --directory ${DB_MIGRATION_DIR}
+        ./init_data.py
+    else
+        flask db migrate -m "Upgrade DB Schema" --directory ${DB_MIGRATION_DIR}
+        flask db upgrade --directory ${DB_MIGRATION_DIR}
+    fi
+fi
+
+exec "$@"