Python 在docker compose first build上为“配置postgres数据库”；背景任务；使用

我有一个Django项目，效果很好。数据库未在存储库中注册。 因此，当我从头开始编写docker compose时，项目无法找到与“后台任务”对应的表

任务在django项目启动时的url.py por immediate read中引用

在不事先编辑此表的代码调用的情况下启动项目的方法是什么

docker compose：

  version: '3'

  services:
    db:
      image: postgres
      environment:
        - POSTGRES_DB=postgres
        - POSTGRES_USER=postgres
        - POSTGRES_PASSWORD=postgres
        - POSTGRES_HOST_AUTH_METHOD=trust
      ports:
        - "5432:5432"
      volumes:
        - ./postgres-data:/var/lib/postgresql/data
    web:
      build: .
      command: bash -c "
        python manage.py runserver 0.0.0.0:8000
        & python manage.py migrate
        & python manage.py process_tasks"
      volumes:
        - .:/code
      ports:
        - "8000:8000"
        - "5555:5555"
      depends_on:
        - db

日志错误：

db_1   | 2020-10-16 11:48:35.090 UTC [32] ERROR:  relation "background_task" does not exist at character 24
db_1   | 2020-10-16 11:48:35.090 UTC [32] STATEMENT:  SELECT (1) AS "a" FROM "background_task" WHERE "background_task"."verbose_name" = 'zmq_puller' LIMIT 1
db_1   | 2020-10-16 11:48:35.090 UTC [33] ERROR:  relation "background_task" does not exist at character 24
db_1   | 2020-10-16 11:48:35.090 UTC [33] STATEMENT:  SELECT (1) AS "a" FROM "background_task" WHERE "background_task"."verbose_name" = 'zmq_puller' LIMIT 1
web_1  | Traceback (most recent call last):
web_1  |   File "/usr/local/lib/python3.9/site-packages/django/db/backends/utils.py", line 84, in _execute
web_1  |     return self.cursor.execute(sql, params)
web_1  | psycopg2.errors.UndefinedTable: relation "background_task" does not exist
web_1  | LINE 1: SELECT (1) AS "a" FROM "background_task" WHERE "background_t...
web_1  |                                ^
web_1  |
web_1  |
web_1  | The above exception was the direct cause of the following exception:
web_1  |
web_1  | Traceback (most recent call last):
web_1  |   File "/code/manage.py", line 22, in <module>
web_1  | Traceback (most recent call last):
web_1  |   File "/usr/local/lib/python3.9/site-packages/django/db/backends/utils.py", line 84, in _execute
web_1  |     return self.cursor.execute(sql, params)
web_1  | psycopg2.errors.UndefinedTable: relation "background_task" does not exist
web_1  | LINE 1: SELECT (1) AS "a" FROM "background_task" WHERE "background_t...
web_1  |                                ^
web_1  |
web_1  |
web_1  | The above exception was the direct cause of the following exception:
web_1  |
web_1  | Traceback (most recent call last):
web_1  |   File "/code/manage.py", line 22, in <module>
web_1  |     main()
web_1  |   File "/code/manage.py", line 18, in main
web_1  |     main()
web_1  |   File "/code/manage.py", line 18, in main
web_1  |     execute_from_command_line(sys.argv)
web_1  |   File "/usr/local/lib/python3.9/site-packages/django/core/management/__init__.py", line 401, in execute_from_command_line
web_1  |     utility.execute()
web_1  |   File "/usr/local/lib/python3.9/site-packages/django/core/management/__init__.py", line 395, in execute
web_1  |     self.fetch_command(subcommand).run_from_argv(self.argv)
web_1  |   File "/usr/local/lib/python3.9/site-packages/django/core/management/base.py", line 330, in run_from_argv
web_1  |     self.execute(*args, **cmd_options)
web_1  |   File "/usr/local/lib/python3.9/site-packages/django/core/management/base.py", line 371, in execute
web_1  |     output = self.handle(*args, **options)
web_1  |   File "/usr/local/lib/python3.9/site-packages/django/core/management/base.py", line 85, in wrapped
web_1  |     res = handle_func(*args, **kwargs)
web_1  |   File "/usr/local/lib/python3.9/site-packages/django/core/management/commands/migrate.py", line 75, in handle
web_1  |     self.check(databases=[database])
web_1  |   File "/usr/local/lib/python3.9/site-packages/django/core/management/base.py", line 392, in check
web_1  |     execute_from_command_line(sys.argv)
web_1  |   File "/usr/local/lib/python3.9/site-packages/django/core/management/__init__.py", line 401, in execute_from_command_line
web_1  |     all_issues = checks.run_checks(
web_1  |   File "/usr/local/lib/python3.9/site-packages/django/core/checks/registry.py", line 70, in run_checks
web_1  |     new_errors = check(app_configs=app_configs, databases=databases)
web_1  |   File "/usr/local/lib/python3.9/site-packages/django/core/checks/urls.py", line 13, in check_url_config
web_1  |     return check_resolver(resolver)
web_1  |   File "/usr/local/lib/python3.9/site-packages/django/core/checks/urls.py", line 23, in check_resolver
web_1  |     return check_method()
web_1  |   File "/usr/local/lib/python3.9/site-packages/django/urls/resolvers.py", line 408, in check
web_1  |     utility.execute()
web_1  |   File "/usr/local/lib/python3.9/site-packages/django/core/management/__init__.py", line 395, in execute
web_1  |     for pattern in self.url_patterns:
web_1  |   File "/usr/local/lib/python3.9/site-packages/django/utils/functional.py", line 48, in __get__
web_1  |         self.fetch_command(subcommand).run_from_argv(self.argv)res = instance.__dict__[self.name] = self.func(instance)
web_1  |
web_1  |   File "/usr/local/lib/python3.9/site-packages/django/urls/resolvers.py", line 589, in url_patterns
web_1  |   File "/usr/local/lib/python3.9/site-packages/django/core/management/base.py", line 330, in run_from_argv
web_1  |     self.execute(*args, **cmd_options)
web_1  |   File "/usr/local/lib/python3.9/site-packages/django/core/management/base.py", line 368, in execute
web_1  |     patterns = getattr(self.urlconf_module, "urlpatterns", self.urlconf_module)
web_1  |   File "/usr/local/lib/python3.9/site-packages/django/utils/functional.py", line 48, in __get__
web_1  |         res = instance.__dict__[self.name] = self.func(instance)self.check()
web_1  |
web_1  |   File "/usr/local/lib/python3.9/site-packages/django/urls/resolvers.py", line 582, in urlconf_module
web_1  |   File "/usr/local/lib/python3.9/site-packages/django/core/management/base.py", line 392, in check
web_1  |     all_issues = checks.run_checks(
web_1  |   File "/usr/local/lib/python3.9/site-packages/django/core/checks/registry.py", line 70, in run_checks
web_1  |     return import_module(self.urlconf_name)
web_1  |   File "/usr/local/lib/python3.9/importlib/__init__.py", line 127, in import_module
web_1  |     new_errors = check(app_configs=app_configs, databases=databases)
web_1  |   File "/usr/local/lib/python3.9/site-packages/django/core/checks/urls.py", line 13, in check_url_config
web_1  |         return check_resolver(resolver)return _bootstrap._gcd_import(name[level:], package, level)
web_1  |
web_1  |   File "/usr/local/lib/python3.9/site-packages/django/core/checks/urls.py", line 23, in check_resolver
web_1  |   File "<frozen importlib._bootstrap>", line 1030, in _gcd_import
web_1  |     return check_method()
web_1  |   File "/usr/local/lib/python3.9/site-packages/django/urls/resolvers.py", line 408, in check
web_1  |     for pattern in self.url_patterns:
web_1  |   File "/usr/local/lib/python3.9/site-packages/django/utils/functional.py", line 48, in __get__
web_1  |     res = instance.__dict__[self.name] = self.func(instance)
web_1  |   File "/usr/local/lib/python3.9/site-packages/django/urls/resolvers.py", line 589, in url_patterns
web_1  |     patterns = getattr(self.urlconf_module, "urlpatterns", self.urlconf_module)
web_1  |   File "/usr/local/lib/python3.9/site-packages/django/utils/functional.py", line 48, in __get__
web_1  |     res = instance.__dict__[self.name] = self.func(instance)
web_1  |   File "/usr/local/lib/python3.9/site-packages/django/urls/resolvers.py", line 582, in urlconf_module
web_1  |     return import_module(self.urlconf_name)
web_1  |   File "/usr/local/lib/python3.9/importlib/__init__.py", line 127, in import_module
web_1  |       File "<frozen importlib._bootstrap>", line 1007, in _find_and_load
web_1  | return _bootstrap._gcd_import(name[level:], package, level)
web_1  |   File "<frozen importlib._bootstrap>", line 1030, in _gcd_import
web_1  |   File "<frozen importlib._bootstrap>", line 986, in _find_and_load_unlocked
web_1  |   File "<frozen importlib._bootstrap>", line 1007, in _find_and_load
web_1  |   File "<frozen importlib._bootstrap>", line 986, in _find_and_load_unlocked
web_1  |   File "<frozen importlib._bootstrap>", line 680, in _load_unlocked
web_1  |   File "<frozen importlib._bootstrap_external>", line 790, in exec_module
web_1  |   File "<frozen importlib._bootstrap>", line 680, in _load_unlocked
web_1  |   File "<frozen importlib._bootstrap_external>", line 790, in exec_module
web_1  |   File "<frozen importlib._bootstrap>", line 228, in _call_with_frames_removed
web_1  |   File "<frozen importlib._bootstrap>", line 228, in _call_with_frames_removed
web_1  |   File "/code/drf_accordion/urls.py", line 45, in <module>
web_1  |   File "/code/drf_accordion/urls.py", line 45, in <module>
web_1  |     if not Task.objects.filter(verbose_name="zmq_puller").exists():
web_1  |   File "/usr/local/lib/python3.9/site-packages/django/db/models/query.py", line 809, in exists
web_1  |     return self.query.has_results(using=self.db)
web_1  |   File "/usr/local/lib/python3.9/site-packages/django/db/models/sql/query.py", line 535, in has_results
web_1  |     return compiler.has_results()
web_1  |   File "/usr/local/lib/python3.9/site-packages/django/db/models/sql/compiler.py", line 1126, in has_results
web_1  |     return bool(self.execute_sql(SINGLE))
web_1  |   File "/usr/local/lib/python3.9/site-packages/django/db/models/sql/compiler.py", line 1156, in execute_sql
web_1  |     cursor.execute(sql, params)
web_1  |   File "/usr/local/lib/python3.9/site-packages/django/db/backends/utils.py", line 98, in execute
web_1  |     return super().execute(sql, params)
web_1  |   File "/usr/local/lib/python3.9/site-packages/django/db/backends/utils.py", line 66, in execute
web_1  |     return self._execute_with_wrappers(sql, params, many=False, executor=self._execute)
web_1  |   File "/usr/local/lib/python3.9/site-packages/django/db/backends/utils.py", line 75, in _execute_with_wrappers
web_1  |     return executor(sql, params, many, context)
web_1  |   File "/usr/local/lib/python3.9/site-packages/django/db/backends/utils.py", line 84, in _execute
web_1  |     return self.cursor.execute(sql, params)
web_1  |   File "/usr/local/lib/python3.9/site-packages/django/db/utils.py", line 90, in __exit__
web_1  |     if not Task.objects.filter(verbose_name="zmq_puller").exists():
web_1  |   File "/usr/local/lib/python3.9/site-packages/django/db/models/query.py", line 809, in exists
web_1  |         return self.query.has_results(using=self.db)
web_1  |   File "/usr/local/lib/python3.9/site-packages/django/db/models/sql/query.py", line 535, in has_results
web_1  | raise dj_exc_value.with_traceback(traceback) from exc_value    return compiler.has_results()
web_1  |   File "/usr/local/lib/python3.9/site-packages/django/db/models/sql/compiler.py", line 1126, in has_results
web_1  |
web_1  |   File "/usr/local/lib/python3.9/site-packages/django/db/backends/utils.py", line 84, in _execute
web_1  |     return bool(self.execute_sql(SINGLE))
web_1  |   File "/usr/local/lib/python3.9/site-packages/django/db/models/sql/compiler.py", line 1156, in execute_sql
web_1  |     return self.cursor.execute(sql, params)
web_1  | django.db.utils.ProgrammingError: relation "background_task" does not exist
web_1  | LINE 1: SELECT (1) AS "a" FROM "background_task" WHERE "background_t...
web_1  |                                ^
web_1  |
web_1  |     cursor.execute(sql, params)
web_1  |   File "/usr/local/lib/python3.9/site-packages/django/db/backends/utils.py", line 98, in execute
web_1  |     return super().execute(sql, params)
web_1  |   File "/usr/local/lib/python3.9/site-packages/django/db/backends/utils.py", line 66, in execute
web_1  |     return self._execute_with_wrappers(sql, params, many=False, executor=self._execute)
web_1  |   File "/usr/local/lib/python3.9/site-packages/django/db/backends/utils.py", line 75, in _execute_with_wrappers
web_1  |     return executor(sql, params, many, context)
web_1  |   File "/usr/local/lib/python3.9/site-packages/django/db/backends/utils.py", line 84, in _execute
web_1  |     return self.cursor.execute(sql, params)
web_1  |   File "/usr/local/lib/python3.9/site-packages/django/db/utils.py", line 90, in __exit__
web_1  |     raise dj_exc_value.with_traceback(traceback) from exc_value
web_1  |   File "/usr/local/lib/python3.9/site-packages/django/db/backends/utils.py", line 84, in _execute
web_1  |     return self.cursor.execute(sql, params)
web_1  | django.db.utils.ProgrammingError: relation "background_task" does not exist
web_1  | LINE 1: SELECT (1) AS "a" FROM "background_task" WHERE "background_t...

db|u 1 | 2020-10-16 11:48:35.090 UTC[32]错误：字符24处不存在“背景任务”关系
db|1 | 2020-10-16 11:48:35.090 UTC[32]声明：从“背景任务”中选择（1）作为“a”，其中“背景任务”。“详细名称”=“zmq拉具”限制1
db|u 1 | 2020-10-16 11:48:35.090 UTC[33]错误：字符24处不存在“背景任务”关系
db|1 | 2020-10-16 11:48:35.090 UTC[33]声明：从“背景任务”中选择（1）作为“a”，其中“背景任务”。“详细名称”=“zmq拉具”限制1
web_1 |回溯（最近一次呼叫最后一次）：
web|1|文件“/usr/local/lib/python3.9/site packages/django/db/backends/utils.py”，第84行，在|
web_1 |返回self.cursor.execute（sql，params）
web_1 | psycopg2.errors.UndefinedTable:关系“后台任务”不存在
web_1第1行：从“后台任务”中选择（1）作为“a”，其中“后台任务…”。。。
web_1|^
网络1|
网络1|
web_1 |上述异常是以下异常的直接原因：
网络1|
web_1 |回溯（最近一次呼叫最后一次）：
web_1 |文件“/code/manage.py”，第22行，在
web_1 |回溯（最近一次呼叫最后一次）：
web|1|文件“/usr/local/lib/python3.9/site packages/django/db/backends/utils.py”，第84行，在|
web_1 |返回self.cursor.execute（sql，params）
web_1 | psycopg2.errors.UndefinedTable:关系“后台任务”不存在
web_1第1行：从“后台任务”中选择（1）作为“a”，其中“后台任务…”。。。
web_1|^
网络1|
网络1|
web_1 |上述异常是以下异常的直接原因：
网络1|
web_1 |回溯（最近一次呼叫最后一次）：
web_1 |文件“/code/manage.py”，第22行，在
web|u 1 | main（）
web_1 |文件“/code/manage.py”，主菜单第18行
web|u 1 | main（）
web_1 |文件“/code/manage.py”，主菜单第18行
web_1 |从命令行（sys.argv）执行
web|1 |文件“/usr/local/lib/python3.9/site packages/django/core/management/uuuu init_uuuuuuuuuuuuuu.py”，第401行，从命令行执行
web_1| utility.execute（）
web|1 |文件“/usr/local/lib/python3.9/site packages/django/core/management/_init___.py”，第395行，在execute中
web_1| self.fetch_命令（子命令）。从_argv（self.argv）运行_
web|1 |文件“/usr/local/lib/python3.9/site packages/django/core/management/base.py”，第330行，从_argv运行
web_1 | self.execute（*args，**cmd_选项）
web|1 |文件“/usr/local/lib/python3.9/site packages/django/core/management/base.py”，第371行，在execute中
web_1 | output=self.handle（*args，**选项）
web|1 |文件“/usr/local/lib/python3.9/site packages/django/core/management/base.py”，第85行，包装
web_1 | res=句柄函数（*args，**kwargs）
web|1 |文件“/usr/local/lib/python3.9/site packages/django/core/management/commands/migrate.py”，handle中的第75行
web_1 | self.check（数据库=[数据库]）
web|1 |文件“/usr/local/lib/python3.9/site packages/django/core/management/base.py”，第392行，检查中
web_1 |从命令行（sys.argv）执行
web|1 |文件“/usr/local/lib/python3.9/site packages/django/core/management/uuuu init_uuuuuuuuuuuuuu.py”，第401行，从命令行执行
web_1 |所有问题=检查。运行检查(
运行检查中的web|1 |文件“/usr/local/lib/python3.9/site packages/django/core/checks/registry.py”，第70行
web_1 |新错误=检查（应用程序配置=应用程序配置，数据库=数据库）
web|1|文件“/usr/local/lib/python3.9/site packages/django/core/checks/url.py”，第13行，在check|url|config中
web_1 |返回检查_解析器（解析器）
web|1|文件“/usr/local/lib/python3.9/site packages/django/core/checks/url.py”，第23行，在check|resolver中
web_1 |返回检查_方法（）
web|1 |文件“/usr/local/lib/python3.9/site packages/django/url/resolvers.py”，第408行，检查中
web_1| utility.execute（）
web|1 |文件“/usr/local/lib/python3.9/site packages/django/core/management/_init___.py”，第395行，在execute中
web_1|对于self.url_模式中的模式：
web|1|文件“/usr/local/lib/python3.9/site packages/django/utils/functional.py”，第48行，在__
web_1 | self.fetch_命令（子命令）。从_argv（self.argv）res=instance运行_。u dict_u[self.name]=self.func（instance）
网络1|
web|1|文件“/usr/local/lib/python3.9/site packages/django/url/resolvers.py”，第589行，url|模式
web|1 |文件“/usr/local/lib/python3.9/site packages/django/core/management/base.py”，第330行，从_argv运行
web_1 | self.execute（*args，**cmd_选项）
web|1 |文件“/usr/local/lib/python3.9/site packages/django/core/management/base.py”，第368行，在execute中
web_1 | patterns=getattr（self.urlconf_模块，“urlpatterns”，self.urlconf_模块）
web|1|文件“/usr/local/lib/python3.9/site packages/django/utils/functional.py”，第48行，在__
web_1 | res=instance.__dict__[self.name]=self.func（实例）self.check（）
网络1|
web|1|文件“/usr/local/lib/python3.9/site packages/django/url/resolvers.py”，urlconf|模块中的第582行
web|1 |文件“/usr/local/lib/python3.9/site packages/django/core/management/base.py”，第392行，检查中
web_1 |所有问题=检查。运行检查(
运行检查中的web|1 |文件“/usr/local/lib/python3.9/site packages/django/core/checks/registry.py”，第70行
web_1|返回导入_模块（self.urlconf_名称）
web_1|文件“/usr/local/lib/python3.9/importlib
version: '3'
    ...
    web:    
        build: .
        command: bash -c "    
        python manage.py runserver 0.0.0.0:8000
        & python manage.py migrate
        & python manage.py process_tasks"
     ...

version: '3'.  
    ...
    web:    
      build: .    
      command: bash -c "
        python manage.py migrate
        & python manage.py runserver 0.0.0.0:8000
        & python manage.py process_tasks"
     ...