Pass git configuration variables via terraform (#3034)

* Pass workspace owner email address to provisioner

* Remove owner_email and owner_username fields from agent metadata

* Add Git environment variables to example templates

* Remove "owner_name" field from provisioner metadata, use username instead

* Remove Git configuration from most templates, add documentation

* Proofreading/typo fixes from @mafredri

* Update example templates to latest version of terraform-provider-coder

examples/templates/docker-code-server/main.tf

@@ -2,7 +2,7 @@ terraform {
   required_providers {
     coder = {
       source  = "coder/coder"
-      version = "0.4.2"
+      version = "0.4.3"
     }
     docker = {
       source  = "kreuzwerker/docker"
@@ -39,6 +39,17 @@ resource "coder_agent" "dev" {
   arch           = var.docker_arch
   os             = "linux"
   startup_script = "code-server --auth none"
+
+  # These environment variables allow you to make Git commits right away after creating a
+  # workspace. Note that they take precedence over configuration defined in ~/.gitconfig!
+  # You can remove this block if you'd prefer to configure Git manually or using
+  # dotfiles. (see docs/dotfiles.md)
+  env = {
+    GIT_AUTHOR_NAME = "${data.coder_workspace.me.owner}"
+    GIT_COMMITTER_NAME = "${data.coder_workspace.me.owner}"
+    GIT_AUTHOR_EMAIL = "${data.coder_workspace.me.owner_email}"
+    GIT_COMMITTER_EMAIL = "${data.coder_workspace.me.owner_email}"
+  }
 }
 
 resource "coder_app" "code-server" {