Question: I have a Dataframe and I want to get the previous data as an example, how can I do this?

If the previous row of A is B, get the value of B

Dataframe

```
df = pd.DataFrame({'Status':['A','A','A','A','A','B','A','A','A','A']})
print(df)

   Status  
0    A       
1    A
2    A
3    A
4    A
5    B <----- get the value
6    A
7    A
8    A
9    A

```

Answer: 
I'm sorry, but it was just my stupid mistake and inattention. I created a **variables.env** file at a level higher than the directory with the **docker-compose.yml** file.  

2 hours wasted...  

Answer: The **variables.env** and **docker-compose.yml** files must be in the same directory.
Try this should work.. also try with \ slash `.\variables.env`

```
version: '3.1'
services:
  geo:
    build:
      context: .
    image:geo_image
    container_name: geo
    ports:
     - "3003:3003"
    volumes:
      - ${path}:/var/geo/data
      - /app/node_modules
      - ${path}:/app
    env_file:
     - ./variables.env
networks:
  default:
    external:
      name: geonw

```