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我试图用 Docker 附加 Rails 容器，但他们说“你不能附加到停止的容器，先启动它”

但是我执行了$docker ps一次，它们正在工作，但是如果我尝试执行$docker attach [rails container name]，它就消失了。

我试过$docker restart [rails container name]了，但它不像下面那样工作。

有谁知道我应该如何解决这个问题？？

我用的是MacOS10.13.6、docker版本是19.03.8，Docker上的ruby版本是2.4.5。

$ docker-compose build
db uses an image, skipping

Building web

Step 1/8 : FROM ruby:2.4.5
 ---> a14928bdfa34
Step 2/8 : RUN apt-get update -qq && apt-get install -y build-essential nodejs
 ---> Using cache
 ---> 440899707638
Step 3/8 : RUN mkdir /app
 ---> Using cache
 ---> b298382e3fca
Step 4/8 : WORKDIR /app
 ---> Using cache
 ---> 1bd9c799818c
Step 5/8 : COPY Gemfile /app/Gemfile
 ---> Using cache
 ---> 4a7ad7441bfe
Step 6/8 : COPY Gemfile.lock /app/Gemfile.lock
 ---> Using cache
 ---> 916a18caba9f
Step 7/8 : RUN bundle install
 ---> Using cache
 ---> c03081abfed0
Step 8/8 : COPY . /app
 ---> Using cache
 ---> e2a7496170af
Successfully built e2a7496170af
Successfully tagged fullstack_web:latest

$ docker-compose up -d
fullstack_db_1 is up-to-date
Starting fullstack_web_1 ... done

$ docker ps
CONTAINER ID        IMAGE               COMMAND                  CREATED             STATUS              PORTS                    NAMES
e117a2a95ad3        fullstack_web       "bundle exec rails s…"   16 minutes ago      Up 3 seconds        0.0.0.0:3000->3000/tcp   fullstack_web_1
954bc6c3627f        mysql:5.7           "docker-entrypoint.s…"   16 minutes ago      Up 16 minutes       3306/tcp, 33060/tcp      fullstack_db_1

$ docker attach fullstack_web_1
You cannot attach to a stopped container, start it first

$ docker ps
CONTAINER ID        IMAGE               COMMAND                  CREATED             STATUS              PORTS                 NAMES
954bc6c3627f        mysql:5.7           "docker-entrypoint.s…"   16 minutes ago      Up 16 minutes       3306/tcp, 33060/tcp   fullstack_db_1

$ docker ps -a
CONTAINER ID        IMAGE               COMMAND                  CREATED             STATUS                      PORTS                 NAMES
e117a2a95ad3        fullstack_web       "bundle exec rails s…"   16 minutes ago      Exited (1) 18 seconds ago                         fullstack_web_1
954bc6c3627f        mysql:5.7           "docker-entrypoint.s…"   16 minutes ago      Up 16 minutes               3306/tcp, 33060/tcp   fullstack_db_1

$ docker restart fullstack_web_1
fullstack_web_1

$ docker ps
CONTAINER ID        IMAGE               COMMAND                  CREATED             STATUS              PORTS                    NAMES
e117a2a95ad3        fullstack_web       "bundle exec rails s…"   16 minutes ago      Up 1 second         0.0.0.0:3000->3000/tcp   fullstack_web_1
954bc6c3627f        mysql:5.7           "docker-entrypoint.s…"   16 minutes ago      Up 16 minutes       3306/tcp, 33060/tcp      fullstack_db_1

$ docker attach fullstack_web_1
You cannot attach to a stopped container, start it first

更多信息

我尝试在 Docker 容器上使用“pry-byebug”。所以我在我的 Gemfile 中添加了“gem pry-byebug”。然后在那之后，我尝试像上面一样附加 rails 容器。

这是 Github↓ bit.ly/2U5ulA6

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