Add Dockerfile and misc files to build docker image

Dockerfile

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+FROM python:3.8
+
+ENV GITLAB_HOST=git.zom.bi
+ENV GITEA_HOST=gitea.zom.bi
+
+WORKDIR /usr/src/app
+
+RUN useradd migrate
+
+RUN mkdir -p /var/data/db && chown -R migrate /var/data
+
+RUN apt-get update && apt-get install --yes --no-install-recommends nginx supervisor
+RUN pip install gunicorn
+
+COPY requirements.txt ./
+RUN pip install --no-cache-dir -r requirements.txt
+
+COPY . /usr/src/app
+
+RUN mkdir ./logs && chown -R migrate ./logs && rm -f giteamigrate/settings.py && ln -s ../docker/settings.docker.py giteamigrate/settings.py
+
+USER migrate
+
+EXPOSE 8000
+
+VOLUME ["/var/data"]
+
+ENTRYPOINT ["./docker/entrypoint.sh"]

docker/entrypoint.sh

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+#!/usr/bin/env bash
+
+cd /usr/src/app
+
+if ! python manage.py migrate ; then
+    echo "Unable to migrate"
+    [[ "$#" -eq 0 ]] && exit 1
+fi
+
+
+if [[ "$#" -gt 0 ]]; then
+    exec "$@"
+else
+    exec supervisord -c /usr/src/app/docker/supervisord.conf
+fi

docker/nginx.conf

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+error_log /usr/src/app/logs/nginx.error.log warn;
+pid /tmp/nginx.pid;
+daemon off;
+worker_processes 1;
+
+events {
+	worker_connections 1024;
+}
+
+http {
+	include /etc/nginx/mime.types;
+	default_type application/octet-stream;
+
+	upstream appserver {
+		server localhost:8001;
+	}
+
+	server {
+		listen 8000;
+
+		access_log /usr/src/app/logs/nginx.access.log combined;
+
+		client_body_temp_path /tmp/client_body;
+		fastcgi_temp_path /tmp/fastcgi;
+		proxy_temp_path /tmp/proxy;
+		scgi_temp_path /tmp/scgi;
+		uwsgi_temp_path /tmp/uwsgi;
+
+		location / {
+			proxy_pass http://appserver;
+			proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
+			proxy_set_header Host $host;
+			proxy_redirect off;
+		}
+
+		location /static/ {
+			root /usr/src/app;
+		}
+	}
+}

docker/settings.docker.py

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+import os
+
+# Build paths inside the project like this: os.path.join(BASE_DIR, ...)
+BASE_DIR = os.path.dirname(os.path.dirname(os.path.abspath(__file__)))
+
+GITLAB_HOST = os.getenv("GITLAB_HOST", "localhost")
+GITEA_HOST = os.getenv("GITEA_HOST", "localhost")
+
+GITLAB_API = 'https://' + GITLAB_HOST + '/api/v4'
+GITEA_API = 'https://' + GITEA_HOST + '/api/v1'
+GITLAB_REPO_URL = 'https://%s:%s@' + GITLAB_HOST + '/%s.git'
+GITEA_REPO_URL = 'https://%s:%s@' + GITEA_HOST + '/%s.git'
+
+# SECURITY WARNING: keep the secret key used in production secret!
+SECRET_KEY = os.getenv("DJANGO_SECRET_KEY",None)
+
+DEBUG = False
+
+ALLOWED_HOSTS = [
+    '*'
+]
+
+# Application definition
+
+INSTALLED_APPS = [
+    'django.contrib.admin',
+    'django.contrib.auth',
+    'django.contrib.contenttypes',
+    'django.contrib.sessions',
+    'django.contrib.messages',
+    'django.contrib.staticfiles',
+    'migrator',
+    'workers',
+]
+
+MIDDLEWARE = [
+    'django.middleware.security.SecurityMiddleware',
+    'django.contrib.sessions.middleware.SessionMiddleware',
+    'django.middleware.common.CommonMiddleware',
+    'django.middleware.csrf.CsrfViewMiddleware',
+    'django.contrib.auth.middleware.AuthenticationMiddleware',
+    'django.contrib.messages.middleware.MessageMiddleware',
+    'django.middleware.clickjacking.XFrameOptionsMiddleware',
+]
+
+ROOT_URLCONF = 'giteamigrate.urls'
+
+TEMPLATES = [
+    {
+        'BACKEND': 'django.template.backends.django.DjangoTemplates',
+        'DIRS': [],
+        'APP_DIRS': True,
+        'OPTIONS': {
+            'context_processors': [
+                'django.template.context_processors.debug',
+                'django.template.context_processors.request',
+                'django.contrib.auth.context_processors.auth',
+                'django.contrib.messages.context_processors.messages',
+            ],
+        },
+    },
+]
+
+WSGI_APPLICATION = 'giteamigrate.wsgi.application'
+
+# Database
+# https://docs.djangoproject.com/en/3.0/ref/settings/#databases
+
+DATABASES = {
+    'default': {
+        'ENGINE': 'django.db.backends.sqlite3',
+        'NAME': '/var/data/db.sqlite3',
+    }
+}
+
+
+# Password validation
+# https://docs.djangoproject.com/en/3.0/ref/settings/#auth-password-validators
+
+AUTH_PASSWORD_VALIDATORS = [
+    {
+        'NAME': 'django.contrib.auth.password_validation.UserAttributeSimilarityValidator',
+    },
+    {
+        'NAME': 'django.contrib.auth.password_validation.MinimumLengthValidator',
+    },
+    {
+        'NAME': 'django.contrib.auth.password_validation.CommonPasswordValidator',
+    },
+    {
+        'NAME': 'django.contrib.auth.password_validation.NumericPasswordValidator',
+    },
+]
+
+
+# Internationalization
+# https://docs.djangoproject.com/en/3.0/topics/i18n/
+
+LANGUAGE_CODE = 'en-us'
+
+TIME_ZONE = 'UTC'
+
+USE_I18N = True
+
+USE_L10N = True
+
+USE_TZ = True
+
+
+# Static files (CSS, JavaScript, Images)
+# https://docs.djangoproject.com/en/3.0/howto/static-files/
+
+STATIC_URL = '/static/'
+
+STATICFILES_DIRS = [
+    os.path.join(BASE_DIR, "static")
+]

docker/supervisord.conf

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+[supervisord]
+nodaemon=true
+logfile=/usr/src/app/logs/supervisord.log
+
+[program:nginx]
+command=nginx -c /usr/src/app/docker/nginx.conf -p /usr/src/app
+
+[program:app_server]
+directory=/usr/src/app
+command=gunicorn -b 127.0.0.1:8001 giteamigrate.wsgi
+
+[program:background_worker]
+directory=/usr/src/app
+command=python manage.py runworkers
+stdout_logfile=/dev/stdout
+stdout_logfile_maxbytes=0
+stderr_logfile=/dev/stderr
+stderr_logfile_maxbytes=0