Add devcontainer configuration

.devcontainer/Dockerfile

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+ARG VARIANT="focal"
+
+# To build without user input
+ARG DEBIAN_FRONTEND=noninteractive
+
+FROM ubuntu:${VARIANT}
+
+ENV TERRAFORM_VERSION=0.12.29
+ENV GO_VERSION=1.14.9
+
+RUN apt-get update && apt-get install -y curl zip make gcc git
+
+# Make shared download folder
+RUN mkdir -p /tmp/docker-downloads
+
+# Install Terraform
+RUN curl -sSL https://releases.hashicorp.com/terraform/${TERRAFORM_VERSION}/terraform_${TERRAFORM_VERSION}_linux_amd64.zip -o /tmp/docker-downloads/terraform.zip \
+    && unzip /tmp/docker-downloads/terraform.zip \
+    && mv terraform /usr/local/bin
+
+# Install Go into /usr/local/go
+RUN curl -fsS https://dl.google.com/go/go${GO_VERSION}.linux-amd64.tar.gz -o /tmp/docker-downloads/golang.tar.gz \
+    && tar -C /usr/local -xvf /tmp/docker-downloads/golang.tar.gz 
+
+ENV PATH=$PATH:/usr/local/go/bin
+
+# Remove shared download folder
+RUN rm -rf /tmp/docker-downloads
+
+ENV DEBIAN_FRONTEND=interactive

.devcontainer/devcontainer.json

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+// For format details, see https://aka.ms/vscode-remote/devcontainer.json or this file's README at:
+// https://github.com/microsoft/vscode-dev-containers/tree/v0.134.1/containers/ubuntu
+{
+	"name": "Terraform Provider AzureRM",
+	"build": {
+		"dockerfile": "Dockerfile",
+	},
+	"runArgs": [
+		"-v",
+		"${env:HOME}${env:USERPROFILE}/.ssh:/root/.ssh-localhost:ro",
+		"--env-file", ".env.sh",
+	],
+	"postCreateCommand": "mkdir -p /root/.ssh && cp -r /root/.ssh-localhost/* /root/.ssh && chmod 700 /root/.ssh && chmod 600 /root/.ssh/*",
+
+	// Set *default* container specific settings.json values on container create.
+	"settings": { 
+		"terminal.integrated.shell.linux": "/bin/bash",
+	},
+
+	// Add the IDs of extensions you want installed when the container is created.
+	"extensions": [
+		"golang.go",
+		"streetsidesoftware.code-spell-checker",
+		"eamodio.gitlens",
+		"yzhang.markdown-all-in-one",
+		"davidanson.vscode-markdownlint"
+	]
+
+	// Use 'forwardPorts' to make a list of ports inside the container available locally.
+	// "forwardPorts": [],
+
+	// Use 'postCreateCommand' to run commands after the container is created.
+	// "postCreateCommand": "uname -a",
+
+	// Uncomment to connect as a non-root user. See https://aka.ms/vscode-remote/containers/non-root.
+	// "remoteUser": "vscode"
+
+}