"docker ps" 输出的 NAMES 列

Question

下面是 docker 文件：

FROM golang:1.14.10

MAINTAINER xyz

ENV SOURCES /product-api

COPY . ${SOURCES}

WORKDIR /product-api

RUN make swagger

ENTRYPOINT product-api

在运行之后执行以下命令：

$ docker build -t cloud-native-product-api:1.0.0

$ docker run -it -p 8080:8080 cloud-native-product-api:1.0.0

docker ps 给出以下输出：

$ docker ps -a
CONTAINER ID        IMAGE                            COMMAND                  CREATED             STATUS              PORTS                    NAMES
9aa144b7873c        cloud-native-product-api:1.0.0   "/bin/sh -c product-…"   3 minutes ago       Up 3 minutes        0.0.0.0:9090->9090/tcp   trusting_matsumoto

trusting_matsumoto 列中的值 trusting_matsumoto 来自哪里？

Answer 1

除非您为容器指定名称，否则 docker 会随机分配一个。

您可以使用 --name 参数指定容器名称：

$ docker run --rm -it --name my_alpine_container alpine

来自documentation

If you do not assign a container name with the --name option, then the daemon generates a random string name for you. Defining a name can be a handy way to add meaning to a container. If you specify a name, you can use it when referencing the container within a Docker network. This works for both background and foreground Docker containers.

"docker ps" 输出的 NAMES 列

NAMES column of "docker ps" output

docker

docker-container