安装postgresql报错，请帮忙解决

• 系统环境

Centos8
Docker version 19.03.8, build afacb8b

• 报错

Status: Downloaded newer image for homeland/homeland:latest
=> Booting Homeland
=> Plugins: 
could not connect to server: Host is unreachable
	Is the server running on host "postgresql" (172.18.0.3) and accepting
	TCP/IP connections on port 5432?
Couldn't create 'homeland' database. Please check your configuration.
rails aborted!
ActiveRecord::NoDatabaseError: could not connect to server: Host is unreachable
	Is the server running on host "postgresql" (172.18.0.3) and accepting
	TCP/IP connections on port 5432?
/home/app/homeland/vendor/bundle/ruby/2.7.0/gems/activerecord-6.0.3/lib/active_record/connection_adapters/postgresql_adapter.rb:50:in `rescue in postgresql_connection'
/home/app/homeland/vendor/bundle/ruby/2.7.0/gems/activerecord-6.0.3/lib/active_record/connection_adapters/postgresql_adapter.rb:33:in `postgresql_connection'
/home/app/homeland/vendor/bundle/ruby/2.7.0/gems/activerecord-6.0.3/lib/active_record/connection_adapters/abstract/connection_pool.rb:887:in `new_connection'
/home/app/homeland/vendor/bundle/ruby/2.7.0/gems/activerecord-6.0.3/lib/active_record/connection_adapters/abstract/connection_pool.rb:931:in `checkout_new_connection'
/home/app/homeland/vendor/bundle/ruby/2.7.0/gems/activerecord-6.0.3/lib/active_record/connection_adapters/abstract/connection_pool.rb:910:in `try_to_checkout_new_connection'
/home/app/homeland/vendor/bundle/ruby/2.7.0/gems/activerecord-6.0.3/lib/active_record/connection_adapters/abstract/connection_pool.rb:871:in `acquire_connection'
/home/app/homeland/vendor/bundle/ruby/2.7.0/gems/activerecord-6.0.3/lib/active_record/connection_adapters/abstract/connection_pool.rb:593:in `checkout'
/home/app/homeland/vendor/bundle/ruby/2.7.0/gems/activerecord-6.0.3/lib/active_record/connection_adapters/abstract/connection_pool.rb:437:in `connection'
/home/app/homeland/vendor/bundle/ruby/2.7.0/gems/activerecord-6.0.3/lib/active_record/connection_adapters/abstract/connection_pool.rb:1119:in `retrieve_connection'
/home/app/homeland/vendor/bundle/ruby/2.7.0/gems/activerecord-6.0.3/lib/active_record/connection_handling.rb:221:in `retrieve_connection'
/home/app/homeland/vendor/bundle/ruby/2.7.0/gems/activerecord-6.0.3/lib/active_record/connection_handling.rb:189:in `connection'
/home/app/homeland/vendor/bundle/ruby/2.7.0/gems/activerecord-6.0.3/lib/active_record/tasks/postgresql_database_tasks.rb:12:in `connection'
/home/app/homeland/vendor/bundle/ruby/2.7.0/gems/activerecord-6.0.3/lib/active_record/tasks/postgresql_database_tasks.rb:21:in `create'
/home/app/homeland/vendor/bundle/ruby/2.7.0/gems/activerecord-6.0.3/lib/active_record/tasks/database_tasks.rb:126:in `create'
/home/app/homeland/vendor/bundle/ruby/2.7.0/gems/activerecord-6.0.3/lib/active_record/tasks/database_tasks.rb:185:in `block in create_current'
/home/app/homeland/vendor/bundle/ruby/2.7.0/gems/activerecord-6.0.3/lib/active_record/tasks/database_tasks.rb:479:in `block (2 levels) in each_current_configuration'
/home/app/homeland/vendor/bundle/ruby/2.7.0/gems/activerecord-6.0.3/lib/active_record/tasks/database_tasks.rb:476:in `each'
/home/app/homeland/vendor/bundle/ruby/2.7.0/gems/activerecord-6.0.3/lib/active_record/tasks/database_tasks.rb:476:in `block in each_current_configuration'
/home/app/homeland/vendor/bundle/ruby/2.7.0/gems/activerecord-6.0.3/lib/active_record/tasks/database_tasks.rb:475:in `each'
/home/app/homeland/vendor/bundle/ruby/2.7.0/gems/activerecord-6.0.3/lib/active_record/tasks/database_tasks.rb:475:in `each_current_configuration'
/home/app/homeland/vendor/bundle/ruby/2.7.0/gems/activerecord-6.0.3/lib/active_record/tasks/database_tasks.rb:184:in `create_current'
/home/app/homeland/vendor/bundle/ruby/2.7.0/gems/activerecord-6.0.3/lib/active_record/railties/databases.rake:39:in `block (2 levels) in <main>'
/home/app/homeland/vendor/bundle/ruby/2.7.0/gems/railties-6.0.3/lib/rails/commands/rake/rake_command.rb:23:in `block in perform'
/home/app/homeland/vendor/bundle/ruby/2.7.0/gems/railties-6.0.3/lib/rails/commands/rake/rake_command.rb:20:in `perform'
/home/app/homeland/vendor/bundle/ruby/2.7.0/gems/railties-6.0.3/lib/rails/command.rb:48:in `invoke'
/home/app/homeland/vendor/bundle/ruby/2.7.0/gems/railties-6.0.3/lib/rails/commands.rb:18:in `<main>'
/home/app/homeland/vendor/bundle/ruby/2.7.0/gems/bootsnap-1.4.6/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:23:in `require'
/home/app/homeland/vendor/bundle/ruby/2.7.0/gems/bootsnap-1.4.6/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:23:in `block in require_with_bootsnap_lfi'
/home/app/homeland/vendor/bundle/ruby/2.7.0/gems/bootsnap-1.4.6/lib/bootsnap/load_path_cache/loaded_features_index.rb:92:in `register'
/home/app/homeland/vendor/bundle/ruby/2.7.0/gems/bootsnap-1.4.6/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:22:in `require_with_bootsnap_lfi'
/home/app/homeland/vendor/bundle/ruby/2.7.0/gems/bootsnap-1.4.6/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:31:in `require'
/home/app/homeland/vendor/bundle/ruby/2.7.0/gems/activesupport-6.0.3/lib/active_support/dependencies.rb:324:in `block in require'
/home/app/homeland/vendor/bundle/ruby/2.7.0/gems/activesupport-6.0.3/lib/active_support/dependencies.rb:291:in `load_dependency'
/home/app/homeland/vendor/bundle/ruby/2.7.0/gems/activesupport-6.0.3/lib/active_support/dependencies.rb:324:in `require'
bin/rails:4:in `<main>'

Caused by:
PG::ConnectionBad: could not connect to server: Host is unreachable
	Is the server running on host "postgresql" (172.18.0.3) and accepting
	TCP/IP connections on port 5432?
/home/app/homeland/vendor/bundle/ruby/2.7.0/gems/pg-1.2.3/lib/pg.rb:58:in `initialize'
/home/app/homeland/vendor/bundle/ruby/2.7.0/gems/pg-1.2.3/lib/pg.rb:58:in `new'
/home/app/homeland/vendor/bundle/ruby/2.7.0/gems/pg-1.2.3/lib/pg.rb:58:in `connect'
/home/app/homeland/vendor/bundle/ruby/2.7.0/gems/activerecord-6.0.3/lib/active_record/connection_adapters/postgresql_adapter.rb:46:in `postgresql_connection'
/home/app/homeland/vendor/bundle/ruby/2.7.0/gems/activerecord-6.0.3/lib/active_record/connection_adapters/abstract/connection_pool.rb:887:in `new_connection'
/home/app/homeland/vendor/bundle/ruby/2.7.0/gems/activerecord-6.0.3/lib/active_record/connection_adapters/abstract/connection_pool.rb:931:in `checkout_new_connection'
/home/app/homeland/vendor/bundle/ruby/2.7.0/gems/activerecord-6.0.3/lib/active_record/connection_adapters/abstract/connection_pool.rb:910:in `try_to_checkout_new_connection'
/home/app/homeland/vendor/bundle/ruby/2.7.0/gems/activerecord-6.0.3/lib/active_record/connection_adapters/abstract/connection_pool.rb:871:in `acquire_connection'
/home/app/homeland/vendor/bundle/ruby/2.7.0/gems/activerecord-6.0.3/lib/active_record/connection_adapters/abstract/connection_pool.rb:593:in `checkout'
/home/app/homeland/vendor/bundle/ruby/2.7.0/gems/activerecord-6.0.3/lib/active_record/connection_adapters/abstract/connection_pool.rb:437:in `connection'
/home/app/homeland/vendor/bundle/ruby/2.7.0/gems/activerecord-6.0.3/lib/active_record/connection_adapters/abstract/connection_pool.rb:1119:in `retrieve_connection'
/home/app/homeland/vendor/bundle/ruby/2.7.0/gems/activerecord-6.0.3/lib/active_record/connection_handling.rb:221:in `retrieve_connection'
/home/app/homeland/vendor/bundle/ruby/2.7.0/gems/activerecord-6.0.3/lib/active_record/connection_handling.rb:189:in `connection'
/home/app/homeland/vendor/bundle/ruby/2.7.0/gems/activerecord-6.0.3/lib/active_record/tasks/postgresql_database_tasks.rb:12:in `connection'
/home/app/homeland/vendor/bundle/ruby/2.7.0/gems/activerecord-6.0.3/lib/active_record/tasks/postgresql_database_tasks.rb:21:in `create'
/home/app/homeland/vendor/bundle/ruby/2.7.0/gems/activerecord-6.0.3/lib/active_record/tasks/database_tasks.rb:126:in `create'
/home/app/homeland/vendor/bundle/ruby/2.7.0/gems/activerecord-6.0.3/lib/active_record/tasks/database_tasks.rb:185:in `block in create_current'
/home/app/homeland/vendor/bundle/ruby/2.7.0/gems/activerecord-6.0.3/lib/active_record/tasks/database_tasks.rb:479:in `block (2 levels) in each_current_configuration'
/home/app/homeland/vendor/bundle/ruby/2.7.0/gems/activerecord-6.0.3/lib/active_record/tasks/database_tasks.rb:476:in `each'
/home/app/homeland/vendor/bundle/ruby/2.7.0/gems/activerecord-6.0.3/lib/active_record/tasks/database_tasks.rb:476:in `block in each_current_configuration'
/home/app/homeland/vendor/bundle/ruby/2.7.0/gems/activerecord-6.0.3/lib/active_record/tasks/database_tasks.rb:475:in `each'
/home/app/homeland/vendor/bundle/ruby/2.7.0/gems/activerecord-6.0.3/lib/active_record/tasks/database_tasks.rb:475:in `each_current_configuration'
/home/app/homeland/vendor/bundle/ruby/2.7.0/gems/activerecord-6.0.3/lib/active_record/tasks/database_tasks.rb:184:in `create_current'
/home/app/homeland/vendor/bundle/ruby/2.7.0/gems/activerecord-6.0.3/lib/active_record/railties/databases.rake:39:in `block (2 levels) in <main>'
/home/app/homeland/vendor/bundle/ruby/2.7.0/gems/railties-6.0.3/lib/rails/commands/rake/rake_command.rb:23:in `block in perform'
/home/app/homeland/vendor/bundle/ruby/2.7.0/gems/railties-6.0.3/lib/rails/commands/rake/rake_command.rb:20:in `perform'
/home/app/homeland/vendor/bundle/ruby/2.7.0/gems/railties-6.0.3/lib/rails/command.rb:48:in `invoke'
/home/app/homeland/vendor/bundle/ruby/2.7.0/gems/railties-6.0.3/lib/rails/commands.rb:18:in `<main>'
/home/app/homeland/vendor/bundle/ruby/2.7.0/gems/bootsnap-1.4.6/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:23:in `require'
/home/app/homeland/vendor/bundle/ruby/2.7.0/gems/bootsnap-1.4.6/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:23:in `block in require_with_bootsnap_lfi'
/home/app/homeland/vendor/bundle/ruby/2.7.0/gems/bootsnap-1.4.6/lib/bootsnap/load_path_cache/loaded_features_index.rb:92:in `register'
/home/app/homeland/vendor/bundle/ruby/2.7.0/gems/bootsnap-1.4.6/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:22:in `require_with_bootsnap_lfi'
/home/app/homeland/vendor/bundle/ruby/2.7.0/gems/bootsnap-1.4.6/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:31:in `require'
/home/app/homeland/vendor/bundle/ruby/2.7.0/gems/activesupport-6.0.3/lib/active_support/dependencies.rb:324:in `block in require'
/home/app/homeland/vendor/bundle/ruby/2.7.0/gems/activesupport-6.0.3/lib/active_support/dependencies.rb:291:in `load_dependency'
/home/app/homeland/vendor/bundle/ruby/2.7.0/gems/activesupport-6.0.3/lib/active_support/dependencies.rb:324:in `require'
bin/rails:4:in `<main>'
Tasks: TOP => db:create
(See full trace by running task with --trace)
make: *** [Makefile:10: install] Error 1