Docker 复制无效

Question

我需要帮助 Docker!

#DockerfileCron    
FROM node:6

RUN mkdir /www
COPY . /www

WORKDIR /www

RUN apt-get update && apt-get install -y cron

CMD ["cron", "-f"]

当我基于这个 Docker 文件构建图像时，命令 COPY 只是复制 Docker 文件并忽略文件夹中的所有其他文件。

# construção das imagens
docker build -t job/job_cronjob - < DockerfileCron

# executa o cron
docker run -d \
        --name job_cronjob job/job_cronjob

我该如何解决这个问题？

Answer 1

docker build -t job/job_cronjob - < DockerfileCron

问题："This will read a Dockerfile from STDIN without context. Due to the lack of a context, no contents of any local directory will be sent to the Docker daemon. Since there is no context, a Dockerfile ADD only works if it refers to a remote URL." - https://docs.docker.com/engine/reference/commandline/build/#build-with--

解决方案：使用-f标志指定Dockerfile：

docker build -t job/job_cronjob -f DockerfileCron .

Docker 复制无效

Docker COPY doesn't work

build

docker

devops