added jekyll developer container

containers/jekyll/.devcontainer/Dockerfile

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+FROM debian:latest
+
+# Avoid warnings by switching to noninteractive
+ENV DEBIAN_FRONTEND=noninteractive
+
+# This Dockerfile adds a non-root 'vscode' user with sudo access. However, for Linux,
+# this user's GID/UID must match your local user UID/GID to avoid permission issues
+# with bind mounts. Update USER_UID / USER_GID if yours is not 1000. See
+# https://aka.ms/vscode-remote/containers/non-root-user for details.
+ARG USERNAME=vscode
+ARG USER_UID=1000
+ARG USER_GID=$USER_UID
+
+# Configure apt and install packages
+RUN apt-get update \
+    && apt-get -y install --no-install-recommends apt-utils dialog 2>&1 \
+    #
+    # Install vim, git, process tools, lsb-release
+    && apt-get install -y \
+        git \
+    #
+    # Install ruby
+    && apt-get install -y \
+        make \
+		build-essential \
+		ruby \
+        ruby-dev \
+    #
+    # Install jekyll
+    && gem install \
+        bundler \
+        jekyll \
+    #
+    # Create a non-root user to use if preferred - see https://aka.ms/vscode-remote/containers/non-root-user.
+    && groupadd --gid $USER_GID $USERNAME \
+    && useradd -s /bin/bash --uid $USER_UID --gid $USER_GID -m $USERNAME \
+    # [Optional] Add sudo support for the non-root user
+    && apt-get install -y sudo \
+    && echo $USERNAME ALL=\(root\) NOPASSWD:ALL > /etc/sudoers.d/$USERNAME\
+    && chmod 0440 /etc/sudoers.d/$USERNAME \
+    #
+    # Clean up
+    && apt-get autoremove -y \
+    && apt-get clean -y \
+    && rm -rf /var/lib/apt/lists/*
+
+# Switch back to dialog for any ad-hoc use of apt-get
+ENV DEBIAN_FRONTEND=dialog

containers/jekyll/.devcontainer/devcontainer.json

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+{
+	"name": "Jekyll",
+	"dockerFile": "Dockerfile",
+
+	// Use 'settings' to set *default* container specific settings.json values on container create. 
+	// You can edit these settings after create using File > Preferences > Settings > Remote.
+	"settings": { 
+		"terminal.integrated.shell.linux": "/bin/bash"
+	},
+
+	// Use 'appPort' to create a container with published ports. If the port isn't working, be sure
+	// your server accepts connections from all interfaces (0.0.0.0 or '*'), not just localhost.
+	// "appPort": ["3000:3000"],
+
+	// Uncomment the next line to run commands after the container is created.
+	// "postCreateCommand": "cd ${input:projectName} && bundle install",
+
+	// Uncomment the next line to use a non-root user. On Linux, this will prevent
+	// new files getting created as root, but you may need to update the USER_UID
+	// and USER_GID in .devcontainer/Dockerfile to match your user if not 1000.
+	// "runArgs": [ "-u", "vscode" ],
+
+	// Add the IDs of extensions you want installed when the container is created in the array below.
+	"extensions": []
+}

containers/jekyll/.vscode/tasks.json

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+{
+    // See https://go.microsoft.com/fwlink/?LinkId=733558
+    // for the documentation about the tasks.json format
+    "version": "2.0.0",
+    "tasks": [
+        {
+            "label": "Serve",
+            "type": "shell",
+            "command": "bundle exec jekyll serve --livereload",
+            "group": {
+                "kind": "test",
+                "isDefault": true
+            },
+            "isBackground": true,
+        },
+        {
+            "label": "Build",
+            "type": "shell",
+            "command": "bundle exec jekyll build",
+            "group": {
+                "kind": "build",
+                "isDefault": true
+            },
+        }
+    ]
+}

containers/jekyll/README.md

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+# Jekyll
+
+## Summary
+
+*Develop static sites with Jekyll, includes everything you need to get up and running.*
+
+| Metadata | Value |  
+|----------|-------|
+| *Contributors* | [Carlos Mendible](https://github.com/cmendible) |
+| *Definition type* | Dockerfile |
+| *Languages, platforms* | Ruby, Jekyll |
+
+## Using this definition with an existing folder
+
+Follow these steps:
+
+1. If this is your first time using a development container, please follow the [getting started steps](https://aka.ms/vscode-remote/containers/getting-started) to set up your machine.
+
+2. To use VS Code's copy of this definition:
+   1. Start VS Code and open your project folder.
+   2. Press <kbd>F1</kbd> select and **Remote-Containers: Add Development Container Configuration Files...** from the command palette.
+   3. Select the Jekyll definition.
+
+3. To use latest-and-greatest copy of this definition from the repository:
+   1. Clone this repository.
+   2. Copy the contents of `containers/jekyll/.devcontainer` to the root of your project folder.
+   3. Start VS Code and open your project folder.
+
+4. After following step 2 or 3, the contents of the `.devcontainer` folder in your project can be adapted to meet your needs.
+
+5. Finally, press <kbd>F1</kbd> and run **Remote-Containers: Reopen Folder in Container** to start using the definition.
+
+## License
+
+Copyright (c) Microsoft Corporation. All rights reserved.
+
+Licensed under the MIT License. See [LICENSE](https://github.com/Microsoft/vscode-dev-containers/blob/master/LICENSE).