Bind-mount AWS Credentials in Dev Container for Development in VS Code (Portable)

Title: Binding AWS Credentials in Dev Containers for Development in VS Code (Portable)

In this article, we will explore how to bind AWS credentials in a Dev Container for development in Visual Studio Code (VS Code) in a portable manner, enabling colleagues to develop on their machines using relative references.

Prerequisites

• Docker Desktop installed on your machine
• Visual Studio Code
• Dockerfile for the Dev Container
• AWS CLI installed on your machine

Steps to Bind AWS Credentials

1. Create a .env file in the root directory of your project.

touch .env

2. Add your AWS credentials to the .env file.

AWS_ACCESS_KEY_ID=<Your Access Key ID>
AWS_SECRET_ACCESS_KEY=<Your Secret Access Key>

3. In your Dockerfile, add the following lines to install AWS CLI and bind the .env file.

FROM devcontainers/react-typescript-boilerplate:latest as builder
WORKDIR /app

# Install AWS CLI
RUN apt-get update && apt-get install -y curl
RUN curl "https://awscli.amazonaws.com/awscli-exe-linux-x86_64.zip" -o "awscliv2.zip"
RUN unzip awscliv2.zip
RUN ./aws/install

# Bind .env file
ENV AWS_ACCESS_KEY_ID=$AWS_ACCESS_KEY_ID
ENV AWS_SECRET_ACCESS_KEY=$AWS_SECRET_ACCESS_KEY

# Copy the project files and run the build
COPY . .
RUN npm install
RUN npm run build

# Create a runtime container
FROM node:14-alpine
WORKDIR /app
COPY --from=builder /app .
COPY --from=builder /.dockerignore .
COPY --from=builder /.env .
RUN npm install
CMD [ "npm", "start" ]

4. In your devcontainer.json file, add the following lines to mount the .env file.

{
  "name": "myReactApp",
  "build": {},
  "settings": {
    "files.exclude": {
      "**/node_modules": {
        "when": "**/*"
      }
    },
    "editor.codeActionsOnSave": {
      "source.fixAll.eslint": true
    },
    "terminal.integrated.shell.windows": "C:\\Windows\\System32\\wsl.exe",
    "extensions": [],
    "remoteUser": null,
    "forwardPorts": [],
    "postCreateCommand": "yarn install",
    "postCreateCommandPath": ".",
    "dockerComposeFile": "docker-compose.yml",
    "dockerComposeArgs": "",
    "dockerFile": "Dockerfile",
    "dockerBuildArgs": {},
    "environmentVariables": {
      "AWS_ACCESS_KEY_ID": "${env:AWS_ACCESS_KEY_ID}",
      "AWS_SECRET_ACCESS_KEY": "${env:AWS_SECRET_ACCESS_KEY}"
    }
  }
}

5. Start the Dev Container.

code . --dev-container-reuse

Now, your AWS credentials are bound in the Dev Container, and your colleagues can develop on their machines using relative references.

References

• Dockerizing a Node.js application
• Docker Dev Containers
• AWS CLI

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