docker build command example

Example 1: docker build

docker build -t [tag] .

Example 2: how to create docker image from custom filename

cat | docker build -t -

Example 3: how run dockerfile

# Use the official image as a parent image.
FROM node:current-slim

# Set the working directory.
WORKDIR /usr/src/app

# Copy the file from your host to your current 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.

# Run the specified command within the container.
CMD [ "npm", "start" ]

# Copy the rest of your app's source code from your host to your image filesystem.
COPY . .

Example 4: command to build docker file

// Make sure you are in the same dictionary where you have saved your Dockerfile
command is:
docker build .