Install Airflow on Docker

version: '3.8' x-airflow-common:  &airflow-common  image: ${AIRFLOW_IMAGE_NAME:-apache/airflow:2.6.3}  environment:  &airflow-common-env  AIRFLOW__CORE__EXECUTOR: LocalExecutor  AIRFLOW__DATABASE__SQL_ALCHEMY_CONN: postgresql+psycopg2://airflow:airflow@postgres/airflow  # For backward compatibility, with Airflow <2.3  AIRFLOW__CORE__SQL_ALCHEMY_CONN: postgresql+psycopg2://airflow:airflow@postgres/airflow  AIRFLOW__CORE__FERNET_KEY: 'your-very-strong-key'  AIRFLOW__CORE__DAGS_ARE_PAUSED_AT_CREATION: 'true'  AIRFLOW__CORE__LOAD_EXAMPLES: 'true'  AIRFLOW__API__AUTH_BACKENDS: 'airflow.api.auth.backend.basic_auth,airflow.api.auth.backend.session'  AIRFLOW__SCHEDULER__ENABLE_HEALTH_CHECK: 'true'  volumes:  - ${AIRFLOW_PROJ_DIR:-.}/dags:/opt/airflow/dags  - ${AIRFLOW_PROJ_DIR:-.}/logs:/opt/airflow/logs  - ${AIRFLOW_PROJ_DIR:-.}/config:/opt/airflow/config  - ${AIRFLOW_PROJ_DIR:-.}/plugins:/opt/airflow/plugins  user: "${AIRFLOW_UID:-50000}:0"  depends_on:  &airflow-common-depends-on  postgres:  condition: service_healthy  services:  postgres:  image: postgres:13  environment:  POSTGRES_USER: airflow  POSTGRES_PASSWORD: airflow  POSTGRES_DB: airflow  volumes:  - postgres-db-volume:/var/lib/postgresql/data  healthcheck:  test: ["CMD", "pg_isready", "-U", "airflow"]  interval: 10s  retries: 5  start_period: 5s  restart: always   airflow-webserver:  <<: *airflow-common  command: webserver  ports:  - "8080:8080"  healthcheck:  test: ["CMD", "curl", "--fail", "http://localhost:8080/health"]  interval: 30s  timeout: 10s  retries: 5  start_period: 30s  restart: always  depends_on:  <<: *airflow-common-depends-on  airflow-init:  condition: service_completed_successfully   airflow-scheduler:  <<: *airflow-common  command: scheduler  healthcheck:  test: ["CMD", "curl", "--fail", "http://localhost:8974/health"]  interval: 30s  timeout: 10s  retries: 5  start_period: 30s  restart: always  depends_on:  <<: *airflow-common-depends-on  airflow-init:  condition: service_completed_successfully   airflow-init:  <<: *airflow-common  entrypoint: /bin/bash  # yamllint disable rule:line-length  command:  - -c  - |  function ver() {  printf "%04d%04d%04d%04d" $${1//./ }  }  airflow_version=$$(AIRFLOW__LOGGING__LOGGING_LEVEL=INFO && gosu airflow airflow version)  airflow_version_comparable=$$(ver $${airflow_version})  min_airflow_version=2.2.0  min_airflow_version_comparable=$$(ver $${min_airflow_version})  if (( airflow_version_comparable < min_airflow_version_comparable )); then  echo  echo -e "\033[1;31mERROR!!!: Too old Airflow version $${airflow_version}!\e[0m"  echo "The minimum Airflow version supported: $${min_airflow_version}. Only use this or higher!"  echo  exit 1  fi  if [[ -z "${AIRFLOW_UID}" ]]; then  echo  echo -e "\033[1;33mWARNING!!!: AIRFLOW_UID not set!\e[0m"  echo "If you are on Linux, you SHOULD follow the instructions below to set "  echo "AIRFLOW_UID environment variable, otherwise files will be owned by root."  echo "For other operating systems you can get rid of the warning with manually created .env file:"  echo " See: https://airflow.apache.org/docs/apache-airflow/stable/howto/docker-compose/index.html#setting-the-right-airflow-user"  echo  fi  one_meg=1048576  mem_available=$$(($$(getconf _PHYS_PAGES) * $$(getconf PAGE_SIZE) / one_meg))  cpus_available=$$(grep -cE 'cpu[0-9]+' /proc/stat)  disk_available=$$(df / | tail -1 | awk '{print $$4}')  warning_resources="false"  if (( mem_available < 4000 )) ; then  echo  echo -e "\033[1;33mWARNING!!!: Not enough memory available for Docker.\e[0m"  echo "At least 4GB of memory required. You have $$(numfmt --to iec $$((mem_available * one_meg)))"  echo  warning_resources="true"  fi  if (( cpus_available < 2 )); then  echo  echo -e "\033[1;33mWARNING!!!: Not enough CPUS available for Docker.\e[0m"  echo "At least 2 CPUs recommended. You have $${cpus_available}"  echo  warning_resources="true"  fi  if (( disk_available < one_meg * 10 )); then  echo  echo -e "\033[1;33mWARNING!!!: Not enough Disk space available for Docker.\e[0m"  echo "At least 10 GBs recommended. You have $$(numfmt --to iec $$((disk_available * 1024 )))"  echo  warning_resources="true"  fi  if [[ $${warning_resources} == "true" ]]; then  echo  echo -e "\033[1;33mWARNING!!!: You have not enough resources to run Airflow (see above)!\e[0m"  echo "Please follow the instructions to increase amount of resources available:"  echo " https://airflow.apache.org/docs/apache-airflow/stable/howto/docker-compose/index.html#before-you-begin"  echo  fi  mkdir -p /sources/logs /sources/dags /sources/plugins  chown -R "${AIRFLOW_UID}:0" /sources/{logs,dags,plugins}  exec /entrypoint airflow version  # yamllint enable rule:line-length  environment:  <<: *airflow-common-env  _AIRFLOW_DB_UPGRADE: 'true'  _AIRFLOW_WWW_USER_CREATE: 'true'  _AIRFLOW_WWW_USER_USERNAME: ${_AIRFLOW_WWW_USER_USERNAME:-airflow}  _AIRFLOW_WWW_USER_PASSWORD: ${_AIRFLOW_WWW_USER_PASSWORD:-airflow}  _PIP_ADDITIONAL_REQUIREMENTS: ''  user: "0:0"  volumes:  - ${AIRFLOW_PROJ_DIR:-.}:/sources  volumes:  postgres-db-volume: 

docker-compose up 

_AIRFLOW_WWW_USER_USERNAME=my_username _AIRFLOW_WWW_USER_PASSWORD=my_password