Added auth-service image

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## Docker image for the Django auth service

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ARG ESGF_REPOSITORY_BASE=esgfdeploy

ARG ESGF_IMAGES_VERSION=latest

ARG GIT_REPOSITORY=https://github.com/cedadev/django-auth-service.git

ARG GIT_VERSION=master

FROM ${ESGF_REPOSITORY_BASE}/python-build:${ESGF_IMAGES_VERSION} as python-build

FROM ${ESGF_REPOSITORY_BASE}/django:${ESGF_IMAGES_VERSION}

# Application definition

INSTALLED_APPS = [

    'django.contrib.staticfiles',

    'django.contrib.sessions',

    'authenticate',

]

MIDDLEWARE = [

    'django.middleware.security.SecurityMiddleware',

    'django.contrib.sessions.middleware.SessionMiddleware',

    'django.middleware.common.CommonMiddleware',

    'django.middleware.csrf.CsrfViewMiddleware',

    'django.contrib.messages.middleware.MessageMiddleware',

    'django.middleware.clickjacking.XFrameOptionsMiddleware',

    'authenticate.oauth2.middleware.BearerTokenAuthenticationMiddleware',

    'authenticate.oidc.middleware.OpenIDConnectAuthenticationMiddleware',

    'authorize.middleware.SAMLAuthorizationMiddleware',

]

ROOT_URLCONF = 'auth_service.urls'

WSGI_APPLICATION = 'auth_service.wsgi.application'

# Use a non database session engine

SESSION_ENGINE = 'django.contrib.sessions.backends.signed_cookies'

# Authlib settings

OAUTH_CLIENT_ID = ""

OAUTH_CLIENT_SECRET = ""

OAUTH_TOKEN_URL = ""

OAUTH_TOKEN_INTROSPECT_URL = ""

OIDC_BACKEND_CLIENT_NAME = "mybackend"

AUTHLIB_OAUTH_CLIENTS = {

    OIDC_BACKEND_CLIENT_NAME: {

        "client_id": OAUTH_CLIENT_ID,

        "client_secret": OAUTH_CLIENT_SECRET,

        "authorize_url": "",

        "userinfo_endpoint": "",

        "server_metadata_url": "",

        "client_kwargs": {"scope": "openid profile email"}

    }

}

# Athorization settings

RESOURCE_SERVER_URI = ""

ATTRIBUTE_SERVICE_URL = ""

AUTHORIZATION_SERVICE_URL = ""