docker - 在 docker 中附加卷后找不到模块

Question

这是我的dockerfile

FROM node:15
# sets the folder structure to /app directory
WORKDIR /app
# copy package.json to /app folder
COPY package.json .
RUN npm install
# Copy all files from current directory to current directory in docker(app)
COPY . ./
EXPOSE 3000
CMD ["node","index.js"]

我在我的 powershell 中使用这个命令在容器中运行图像

docker run -v ${pwd}:/app -p 3000:3000 -d --name node-app node-app-image

${pwd}returns the current directory.But as soon as I hit enter, somehow node_modules isn't being installed in the container and I get "express not found" error in the log.[![Docker log][1]][1]I can't verify if node_modules isn't being installed because I can't get the container up to run the exec --it command.

---

I was following a freecodecamp tutorial and it seems to work in his pc and I've tried this command in command prompt too by replacing ${pwd} by %cd%.

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在我在命令中添加卷标志之前，这曾经工作正常。[1]: /image/4Fifu.png

Answer 1

您的问题是您在某处构建您的图像，然后尝试将另一个文件夹映射到它。

|_MyFolder/
  |_ all-required-files
  |_ all-required-folders
  |_ Dockerfile

docker build -t node-app-image .

docker run -p 3000:3000 -d --name node-app node-app-image

简化的 Dockerfile

FROM node:15
# sets the folder structure to /app directory
WORKDIR /app

# Copy all files from current directory to current directory in docker(app)
COPY . ./

RUN npm install

EXPOSE 3000
CMD ["node","index.js"]