I wrote a Dockerfile to make an image of my project:

FROM golang:alpine AS builder
WORKDIR /app
ADD go.mod .
COPY . .
RUN go build -o bot .

FROM alpine
WORKDIR /app
COPY --from=builder /app/bot /app/bot
COPY migration migration
COPY migrate.sh .
RUN chmod +x migrate.sh
CMD ["./bot"]

I need to copy migration directory and migrate.sh script to make migrations.

Then I wrote a docker-compose file:

services:
  postgres:
    image: postgres:latest
    container_name: postgres
    restart: always
    environment:
      POSTGRES_DB: ${POSTGRES_DB}
      POSTGRES_USER: ${POSTGRES_USER}
      POSTGRES_PASSWORD: ${POSTGRES_PASSWORD}
    ports:
      - "${POSTGRES_PORT}:5432"
    networks:
      - bot-reminder
  bot:
    image: my_image
    container_name: bot
    restart: always
    environment:
      POSTGRES_DB: ${POSTGRES_DB}
      POSTGRES_USER: ${POSTGRES_USER}
      POSTGRES_PASSWORD: ${POSTGRES_PASSWORD}
      POSTGRES_HOST: ${POSTGRES_HOST}
      POSTGRES_PORT: ${POSTGRES_PORT}
      TOKEN: ${TOKEN}
      TIMEOUT: ${TIMEOUT}
      MAX_MSG_SIZE: ${MAX_MSG_SIZE}
      CHANNEL_ID: ${CHANNEL_ID}
      LOG_LEVEL: ${LOG_LEVEL}
    networks:
      - bot-reminder
    depends_on:
      - postgres
    command: ["./migrate.sh", "up"]
networks:
  bot-reminder:

But when I run docker compose up -d, the bot container gives an error:

exec ./migrate.sh: no such file or directory

I run a command docker export bot > files.tar. I saw all necessary files inside of files.tar.

But why then container gives an error? Why it does not execute it?

I tried to write command ./migrate.sh up in different ways: app/migrate.sh, ./app/migrate.sh, /app/migrate.sh but it didn’t work.

I also added command ls and it printed all necessary files.