Building Images and Launching Apps

Build Image

To build an image named nodehello from your Dockerfile, the following command is used:

docker image build -t nodehello .

📌 The period at the end of the command is essential. It references the application path. You can also use -f <file> if you didn’t name your build file “Dockerfile” e.g.,

docker image build -f Dockerfile.prod -t nodehello .

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