Merge pull request #1 from nyu-devops/docker-in-docker

Docker in docker

.devcontainer/Dockerfile

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+# DevOps Workshop 2021 Image for Python3 and Docker
+FROM python:3.9-slim
+
+ARG INSTALL_ZSH="true"
+ARG UPGRADE_PACKAGES="false"
+ARG ENABLE_NONROOT_DOCKER="true"
+ARG USE_MOBY="true"
+ARG DOCKER_VERSION="latest"
+
+# Enable new "BUILDKIT" mode for Docker CLI
+ENV DOCKER_BUILDKIT=1
+
+# Create a user for development
+ARG USERNAME=vscode
+ARG USER_UID=1000
+ARG USER_GID=$USER_UID
+
+COPY .devcontainer/library-scripts/*.sh /tmp/library-scripts/
+RUN apt-get update \
+    && /bin/bash /tmp/library-scripts/common-debian.sh "${INSTALL_ZSH}" "${USERNAME}" "${USER_UID}" "${USER_GID}" "${UPGRADE_PACKAGES}" "true" "true" \
+    # Use Docker script from script library to set things up
+    && /bin/bash /tmp/library-scripts/docker-in-docker-debian.sh "${ENABLE_NONROOT_DOCKER}" "${USERNAME}" "${USE_MOBY}" "${DOCKER_VERSION}" \
+    # Clean up
+    && apt-get autoremove -y && apt-get clean -y && rm -rf /var/lib/apt/lists/* /tmp/library-scripts/
+
+# [Optional] Uncomment this section to install additional OS packages.
+# RUN apt-get update && export DEBIAN_FRONTEND=noninteractive \
+#     && apt-get -y install --no-install-recommends <your-package-list-here>
+
+# Set up the Kubernetes tools
+RUN curl -LO "https://dl.k8s.io/release/$(curl -L -s https://dl.k8s.io/release/stable.txt)/bin/linux/$(dpkg --print-architecture)/kubectl" \
+    && install -o root -g root -m 0755 kubectl /usr/local/bin/kubectl \
+    && echo "alias kc='/usr/local/bin/kubectl'" >> /home/$USERNAME/.bash_aliases \
+    && chown $USERNAME:$USERNAME /home/$USERNAME/.bash_aliases \
+    && curl -s https://raw.githubusercontent.com/rancher/k3d/main/install.sh | bash \
+    && curl https://raw.githubusercontent.com/helm/helm/main/scripts/get-helm-3 | bash
+
+# Update Python tools
+RUN pip3 install -U pip wheel setuptools
+
+# Set up the development environment
+WORKDIR /app
+VOLUME [ "/var/lib/docker" ]
+
+# Become a regular user
+USER $USERNAME
+
+# Setting the ENTRYPOINT to docker-init.sh will start up the Docker Engine 
+# inside the container "overrideCommand": false is set in devcontainer.json. 
+# The script will also execute CMD if you need to alter startup behaviors.
+ENTRYPOINT [ "/usr/local/share/docker-init.sh" ]
+CMD [ "sleep", "infinity" ]

.devcontainer/devcontainer.json

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+{
+	"name": "Python Docker",
+	"dockerComposeFile": "docker-compose.yml",
+	"service": "app",
+	"workspaceFolder": "/app",
+	"remoteUser": "vscode",
+	"overrideCommand": false,
+	"settings": {},
+	"extensions": [
+		"VisualVisualStudioExptTeam.vscodeintellicodeStudio",
+		"ms-python.python",
+		"ms-python.vscode-pylance",
+		"ms-azuretools.vscode-docker",
+    	"wholroyd.jinja",
+		"cstrap.flask-snippets",
+		"yzhang.markdown-all-in-one",
+		"DavidAnson.vscode-markdownlint",
+		"bierner.github-markdown-preview",        
+		"donjayamanne.githistory",
+		"redhat.vscode-yaml",
+		"inercia.vscode-k3d"
+	],
+    "postCreateCommand": "pip install -U pip wheel && pip install -r requirements.txt",
+	"features": {
+		"docker-in-docker": {
+			"version": "latest",
+			"moby": true
+		}
+	}
+}

.devcontainer/docker-compose.yml

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+version: "3"
+
+services:
+  app:
+    build:
+      context: ..
+      dockerfile: .devcontainer/Dockerfile
+    hostname: devops
+    init: true 
+    privileged: true
+    # ports:
+    #   - 5000:5000
+    volumes:
+      - ..:/app
+      - ~/.gitconfig:/home/vscode/.gitconfig
+      - ~/.ssh/:/home/vscode/.ssh/
+      - dind-var-lib-docker:/var/lib/docker
+    command: sleep infinity
+    environment:
+      FLASK_APP: service:app
+      PORT: 5000
+      DATABASE_URI: "redis://redis:6379/0"
+    networks:
+      - dev
+    depends_on:
+      - redis
+
+  redis:
+    image: redis:6-alpine
+    hostname: redis
+    ports:
+      - "6379:6379"
+    volumes:
+      - redis:/data
+    networks:
+      - dev
+
+volumes:
+  redis:
+  dind-var-lib-docker:
+
+networks:
+  dev: