How to install golang in docker

Docker is a very popular containerization platform, and Golang is a very popular programming language. When deploying Go applications, using Docker as the container running environment is a good choice.

This article will introduce how to install the Golang programming language in Docker.

1. Install Docker

First you need to install Docker on your local computer. Installation tutorials can be found on the Docker official website.

2. Create Dockerfile

Next you need to create a file named Dockerfile and save it locally.

In the Dockerfile, you need to write all the instructions required for the Docker image. The following is a sample Dockerfile:

# 使用golang 1.14版本的官方镜像作为基础
FROM golang:1.14

# 在容器中创建一个工作目录
RUN mkdir /app

# 将工作目录设置为当前目录
WORKDIR /app

# 将本地的代码复制到容器中的工作目录
COPY . /app

# 下载并安装依赖
RUN go mod download

# 构建应用程序
RUN go build -o main .

# 设置容器启动时运行的命令
CMD ["/app/main"]

3. Build the Docker image

Execute the following command in the directory where the Dockerfile is located to build the Docker image:

docker build -t my-golang-app .

Among them, the -t parameter Specifies the name of the Docker image.

4. Run the Docker container

After the Docker image is built, you can use the following command to start the Docker container:

docker run -it --rm my-golang-app

Among them, the -it parameter means the management terminal and Docker Container interaction.

--rm parameter means to delete the container when closing the Docker container.

my-golang-app is the name you set for the container when building the Docker image.

5. Test the Go program

After completing the above steps, your Go application should be running in the Docker container. You can test it using the following command:

curl localhost:8080

If your application returns a "Hello, World!" message, then you have successfully installed the Golang programming language in Docker.

Summary

Here, we introduced how to install the Golang programming language in Docker.

Building and deploying applications is easy with Docker because it packages all dependencies and environments together and can run on any system.

If you haven’t tried using Docker to deploy applications, start now! It can provide a faster, convenient and flexible deployment method for your applications.

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