Learning Dockerfile for Beginners

This project contains a simple and practical example of a Dockerfile to help beginners learn how to use Docker.

Prerequisites

• Docker installed on your system
• Basic knowledge of the Linux command line

Here's what each line does

• FROM dart AS build: Use the official dart image as our base image.

• WORKDIR /app: Set the working directory in the container to /app.

• COPY pubspec.* /app/: Copy the dependency file from the current directory to the container.

• RUN dart pub get --no-precompile: Download and install the dependencies defined in pubspec file.

• COPY app.dart /app/: Copy the application code to the container.

• RUN dart compile exe app.dart -o app: Compiles the app.dart file into an executable binary called app.

• FROM debian:stable-slim: Base image for second stage

• COPY --from=build /app/app /app/app: Copy the executable binary from previous stage to directory

• CMD ["/app/app"]: run the application

Usage

1. Clone the repository:

git clone https://github.com/devopshobbies/docker-templates.git

2. Build the Docker image:

cd docker-templates/14-Dart
docker build -t hello-dart .

3. Run the Docker container:

docker container run hello-dart