build/dev: Add VSCode Devcontainer support (#1000)

* Adding Devcontainer support

* Update .devcontainer/devcontainer.json

Awesome. I had to manually install the extension. Adding this would be perfect

Co-authored-by: Scott <gloriousCode@users.noreply.github.com>

* Update docker-compose.yml

Co-authored-by: Scott <gloriousCode@users.noreply.github.com>

.devcontainer/Dockerfile

@@ -0,0 +1,17 @@
+# See here for image contents: https://github.com/microsoft/vscode-dev-containers/tree/v0.195.0/containers/go/.devcontainer/base.Dockerfile
+# [Choice] Go version (use -bullseye variants on local arm64/Apple Silicon): 1, 1.16, 1.17, 1-bullseye, 1.16-bullseye, 1.17-bullseye, 1-buster, 1.16-buster, 1.17-buster
+ARG VARIANT=1-bullseye
+FROM mcr.microsoft.com/vscode/devcontainers/go:0-${VARIANT}
+
+# [Choice] Node.js version: lts/*, 16, 14, 12, 10
+ARG NODE_VERSION="lts/*"
+RUN if [ "${NODE_VERSION}" != "none" ]; then su vscode -c ". /usr/local/share/nvm/nvm.sh && nvm install ${NODE_VERSION} 2>&1"; fi
+
+# RUN mv -vn config_example.json config.json
+WORKDIR /workspace
+
+# RUN cp . /workspace/
+# RUN CWD
+# RUN GO111MODULE=on go mod vendor
+# RUN go build .
+# RUN go build ./cmd/gctcli

.devcontainer/devcontainer.json

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+// For format details, see https://aka.ms/devcontainer.json. For config options, see the README at:
+// https://github.com/microsoft/vscode-dev-containers/tree/v0.241.1/containers/docker-existing-docker-compose
+// If you want to run as a non-root user in the container, see .devcontainer/docker-compose.yml.
+{
+	"name": "Existing Docker Compose (Extend)",
+
+	// Update the 'dockerComposeFile' list if you have more compose files or use different names.
+	// The .devcontainer/docker-compose.yml file contains any overrides you need/want to make.
+	"dockerComposeFile": [
+		"docker-compose.yml"
+	],
+
+	// The 'service' property is the name of the service for the container that VS Code should
+	// use. Update this value and .devcontainer/docker-compose.yml to the real service name.
+	"service": "daemon",
+
+	// The optional 'workspaceFolder' property is the path VS Code should open by default when
+	// connected. This is typically a file mount in .devcontainer/docker-compose.yml
+	"workspaceFolder": "/workspace",
+
+	// Use 'forwardPorts' to make a list of ports inside the container available locally.
+	// "forwardPorts": [],
+
+	// Uncomment the next line if you want start specific services in your Docker Compose config.
+	// "runServices": [],
+
+	// Uncomment the next line if you want to keep your containers running after VS Code shuts down.
+	// "shutdownAction": "none",
+
+	// Uncomment the next line to run commands after the container is created - for example installing curl.
+	// "postCreateCommand": "apt-get update && apt-get install -y curl",
+
+	// Uncomment to connect as a non-root user if you've added one. See https://aka.ms/vscode-remote/containers/non-root.
+	"remoteUser": "vscode",
+	"customizations": {
+		"vscode": {
+			"extensions": [
+				"golang.go"
+			]
+		}
+	}
+}

.devcontainer/docker-compose.yml

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+version: '3'
+services:
+  # Update this to the name of the service you want to work with in your docker-compose.yml file
+  daemon:
+    # If you want add a non-root user to your Dockerfile, you can use the "remoteUser"
+    # property in devcontainer.json to cause VS Code its sub-processes (terminals, tasks, 
+    # debugging) to execute as the user. Uncomment the next line if you want the entire 
+    # container to run as this user instead. Note that, on Linux, you may need to 
+    # ensure the UID and GID of the container user you create matches your local user. 
+    # See https://aka.ms/vscode-remote/containers/non-root for details.
+    #
+    user: vscode
+
+    # Uncomment if you want to override the service's Dockerfile to one in the .devcontainer 
+    # folder. Note that the path of the Dockerfile and context is relative to the *primary* 
+    # docker-compose.yml file (the first in the devcontainer.json "dockerComposeFile"
+    # array). The sample below assumes your primary file is in the root of your project.
+    #
+    build:
+      context: .
+      dockerfile: Dockerfile
+
+    volumes:
+      # Update this to wherever you want VS Code to mount the folder of your project
+      - ..:/workspace:cached
+
+
+      # Uncomment the next line to use Docker from inside the container. See https://aka.ms/vscode-remote/samples/docker-from-docker-compose for details.
+      # - /var/run/docker.sock:/var/run/docker.sock 
+
+    # Uncomment the next four lines if you will use a ptrace-based debugger like C++, Go, and Rust.
+    #cap_add:
+    #  - SYS_PTRACE
+    #security_opt:
+    #  - seccomp:unconfined
+
+    # Overrides default command so things don't shut down after the process ends.
+    command: /bin/sh -c "while sleep 1000; do :; done"
+