CODEWITHSUNDEEP
dockerdocker-compose
João Casarin
João Casarin

Reputation: 926

Container exits from docker-compose up but I can run it manually

Well, basically I got this docker-compose.yml:

version: "3.9"

services:

  # Database
  db:
    image: mysql:5.7
    volumes:
      - db_data:/var/lib/mysql
      - ./schemas/mysql.sql:/data/application/init.sql
    restart: always
    ports:
      - "3306:3306"
    environment:
      MYSQL_ROOT_PASSWORD: 123
      MYSQL_ROOT_HOST: 10.5.0.1
      MYSQL_DATABASE: forgottenserver
      MYSQL_PASSWORD: 123
    command: --init-file /data/application/init.sql
    networks:
      tibia:
        ipv4_address: 10.5.0.5

  # phpmyadmin
  phpmyadmin:
    depends_on:
      - db
    image: phpmyadmin
    restart: always
    ports:
      - "8090:80"
    environment:
      PMA_HOST: db
      MYSQL_ROOT_PASSWORD: 123
    networks:
      tibia:
        ipv4_address: 10.5.0.3

networks:
  tibia:
    driver: bridge
    ipam:
      config:
        - subnet: 10.5.0.0/16
          gateway: 10.5.0.1
volumes:
  db_data:

and this Dockerfile:

FROM ubuntu:20.04@sha256:bffb6799d706144f263f4b91e1226745ffb5643ea0ea89c2f709208e8d70c999

ENV TZ=America/Sao_Paulo
ENV WD=/home/tibia/server
ARG DEBIAN_FRONTEND=noninteractive

RUN useradd --system --create-home --shell /bin/bash --gid root --groups sudo --uid 1001 tibia

RUN apt-get update -y && \
    apt-get upgrade -y && \
    apt-get install --no-install-recommends -y tzdata \
    autoconf automake pkg-config build-essential cmake \
    liblua5.1-0-dev libsqlite3-dev libmysqlclient-dev \
    libxml2-dev libgmp3-dev libboost-filesystem-dev \
    libboost-regex-dev libboost-thread-dev

USER tibia
WORKDIR $WD

COPY . .
RUN mv config.lua.dist config.lua && \
    mkdir build && \
    cd build && \
    cmake .. && \
    make -j$(grep processor /proc/cpuinfo | wc -l)

EXPOSE 7171 7172
CMD ["/bin/bash"]

The Dockerfile is just building an executable.

The problem is that if I add this to the compose file and try to run all those services, the one that uses the Dockerfile just exits and doesn't restart:

# ...
services:
  server:
    build: .
    ports:
      - "7171:7171"
      - "7172:7172"
    networks:
      tibia:
        ipv4_address: 10.5.0.4

But if I run the compose with just the services db and phpmyadmin, and then run manually my built image from Dockerfile using:

docker run -itd --network=3777_tibia --ip 10.5.0.4 -p 7171:7171 -p 7172:7172 3777_server

Then it works like a charm!!!! Even the network does work.

Some screenshots of my Docker Desktop: list of containers server container logs

How can I make this missing service work with the docker-compose file?

NEW EDIT: image of the logs: logs

Upvotes: 5

Views: 3814

Answers (2)

David Maze
David Maze

Reputation: 159830

Your Dockerfile specifies bash as the command to run. It doesn't actually run the program you built. Since Compose is oriented towards running multiple long-running service-type containers, it's tricky to interact with an interactive shell as the main container process. You also don't usually want to start a container, then start the thing the container does; you just want to start the container and have it run the process.

Once you've built the program, set the image's CMD to run it.

CMD ["./the_program"]

With a typical C(++) program built using Make, you should be able to make install it into /usr/local where you can run it without specifying a path explicitly. You could combine this with a multi-stage build to get a much smaller image without any of the build tools or header files.

Upvotes: 1

Hans Kilian
Hans Kilian

Reputation: 25622

Your dockerfile specifies bash as the command to run.

When you run it via the docker-compose file, bash sees that there's no TTY and it exits immediately and the container stops.

When you run it from the command line, you attach a TTY using the -it options. Bash then runs interactively and waits for input.

To get your container to run interactively when run from docker-compose, you need to add stdin_open and tty options, like this

services:
  server:
    build: .
    ports:
      - "7171:7171"
      - "7172:7172"
    stdin_open: true
    tty: true
    networks:
      tibia:
        ipv4_address: 10.5.0.4

Upvotes: 7

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