TheWORKDIRinstruction can resolve environment variables previously set usingENV. You can only use environment variables explicitly set in theDockerfile. For example: WORKDIR指令可以解析以前使用ENV设置的环境变量。您只能使用在Dockerfile中显式设置的环境变量。 例如: ENVDIRPATH=/pathWORKDIR$DIRPATH/$DIRNAMER...
下面给出一个完整的示例,展示了如何在Dockerfile中执行多条命令: # Base imageFROMubuntu:latest# Install dependenciesRUNapt-get update && apt-get install -y\git\curl\wget# Copy filesCOPY. /app# Set working directoryWORKDIR/app# Run commandCMD["python","app.py"] 1. 2. 3. 4. 5. 6. 7. ...
# Use the .NET 6 runtime as a base image FROM mcr.microsoft.com/dotnet/runtime:6.0 # Set the working directory to /app WORKDIR /app # Copy the contents of the published app to the container's /app directory COPY bin/Release/net6.0/publish/ . # Expose port 80 to the outsid...
The next instruction uses theCOPYinstructionto copy thehello.pyfile from the local build context into the root directory of our image. COPYhello.py / Abuild contextis the set of files that you can access in Dockerfile instructions such asCOPYandADD. ...
# Set your working directory WORKDIR /var/www/ # Copy the necessary files COPY ./app.py /var/www/app.py COPY ./requirements.txt /var/www/requirements.txt # Install the necessary packages RUN pip install -r /var/www/requirements.txt ...
WORKDIR /usr/src/my_app_directory # Copy code from your local context to the image working directory COPY . . # Set default value for a variable ARG my_var=my_default_value # Set code to run at container run time ENTRYPOINT ["python", "./app/my_script.py", "my_var"] ...
# Set the working directory. WORKDIR /usr/src/app # Copy the file from your host to yourcurrent location. COPY package.json . # Run the command inside your image filesystem. RUN npm install # Inform Docker that the container is listening on the specified port at runtime. ...
The next instruction uses theCOPYinstructionto copy thehello.pyfile from the local build context into the root directory of our image. COPYhello.py / Abuild contextis the set of files that you can access in Dockerfile instructions such asCOPYandADD. ...
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WORKDIR 切换到镜像中的指定路径，设置工作目录 在 WORKDIR 中需要使用绝对路径，如果镜像中对应的路径不...