added env templates for docker

docker/airflow_db_env_template

@@ -0,0 +1,3 @@
+POSTGRES_PASSWORD=''
+POSTGRES_USER=airflow
+POSTGRES_DB=airflow

docker/airflow_env_template

@@ -0,0 +1,28 @@
+AIRFLOW__WEBSERVER__RBAC=True
+AIRFLOW__WEBSERVER__DEFAULT_UI_TIMEZONE='Europe/London'
+AIRFLOW__WEBSERVER__WEB_SERVER_SSL_CERT=/SSL/airflow.cert
+AIRFLOW__WEBSERVER__WEB_SERVER_SSL_KEY=/SSL/airflow.key
+AIRFLOW__WEBSERVER__DAG_ORIENTATION=TB
+AIRFLOW__LOGGING__BASE_LOG_FOLDER=/opt/airflow/logs
+AIRFLOW__LOGGING__LOGGING_LEVEL=WARN
+AIRFLOW__CORE__SQL_ALCHEMY_CONN=''
+AIRFLOW__CORE__DAGS_FOLDER=/rds/general/user/igf/home/data2/airflow_test/github/igf-airflow-hpc/dags
+AIRFLOW__CORE__DEFAULT_TIMEZONE='Europe/London'
+AIRFLOW__CORE__PARALLELISM=100
+AIRFLOW__CORE__DAG_CONCURRENCY=10
+AIRFLOW__CORE__DAGS_ARE_PAUSED_AT_CREATION=False
+AIRFLOW__CORE__NON_POOLED_TASK_SLOT_COUNT=10
+AIRFLOW__CORE__MAX_ACTIVE_RUNS_PER_DAG=30
+AIRFLOW__CORE__LOAD_EXAMPLES=False
+AIRFLOW__CORE__EXECUTOR=CeleryExecutor
+AIRFLOW__CORE__DEFAULT_TASK_RETRIES=4
+AIRFLOW__CORE__STORE_SERIALIZED_DAGS=True
+AIRFLOW__CELERY__WORKER_CONCURRENCY=1
+AIRFLOW__CELERY__BROKER_URL=''
+AIRFLOW__CELERY__RESULT_BACKEND=''
+AIRFLOW__CELERY__FLOWER_BASIC_AUTH=''
+AIRFLOW__CELERY__BROKER_TRANSPORT_OPTIONS__VISIBILITY_TIMEOUT=86400
+AIRFLOW__SECRETS__BACKEND=airflow.secrets.local_filesystem.LocalFilesystemBackend
+AIRFLOW__SECRETS__BACKEND_KWARGS={"variables_file_path":"/rds/general/user/igf/home/data2/airflow_test/secrets/var.json","connections_file_path":"/rds/general/user/igf/home/data2/airflow_test/secrets/conn.json"}
+FERNET_KEY=''
+PYTHONPATH=/rds/general/user/igf/home/data2/airflow_test/github/igf-airflow-hpc:$PYTHONPATH