XK0-005 · Question #728
A Linux administrator needs to expose port 9000 for a container to listen during runtime. The Linux administrator creates a Dockerfile with the following entries. # Test-Container FROM node:9-alpine…
The correct answer is A. docker build -t Test-Container F. docker run -p 80:9000 Test-Container. First, the administrator should build the container image using the command docker build -t Test- Container, which creates a Docker image with the specified configuration. To run the container and expose port 9000, the correct command is docker run -p 80:9000 Test-Container…
Question
A Linux administrator needs to expose port 9000 for a container to listen during runtime. The Linux administrator creates a Dockerfile with the following entries. # Test-Container FROM node:9-alpine WORDDIR /usr/src/app COPY package*.json ./ RUN npm install copy . . EXPOSE 9000 CMD ['npm", "start"] Which of the following commands should the administrator use to accomplish this task? (Choose two).
Options
- Adocker build -t Test-Container
- Bdocker tag Test-Container
- Cdocker inspect Test-Container
- Ddocker run -p 5000:80 Test-Container
- Edocker push Test-Container
- Fdocker run -p 80:9000 Test-Container
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Explanation
First, the administrator should build the container image using the command docker build -t Test- Container, which creates a Docker image with the specified configuration. To run the container and expose port 9000, the correct command is docker run -p 80:9000 Test-Container, which maps the container's port 9000 to port 80 on the host machine, making the service accessible externally on port 80.
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