refactor: Add install script for coder CLI (#243)

This adds a `make install` target that copies the CLI and other coder binaries to `$GOPATH/bin` Intended to be helpful for developers who aren't familiar with `go` or the directory structure, in running `coder` CLI locally.

Makefile

@@ -1,3 +1,5 @@
+INSTALL_DIR=$(shell go env GOPATH)/bin
+
 bin/coder:
 	mkdir -p bin
 	go build -o bin/coder cmd/coder/main.go
@@ -51,6 +53,12 @@ fmt: fmt/prettier fmt/sql
 gen: database/generate peerbroker/proto provisionersdk/proto provisionerd/proto
 .PHONY: gen
 
+install: 
+	@echo "--- Copying from bin to $(INSTALL_DIR)"
+	cp -r ./bin $(INSTALL_DIR)
+	@echo "-- CLI available at $(shell ls $(INSTALL_DIR)/coder*)"
+.PHONY: install
+
 peerbroker/proto: peerbroker/proto/peerbroker.proto
 	protoc \
 		--go_out=. \

README.md

@@ -15,6 +15,13 @@ This repository contains source code for Coder V2. Additional documentation:
 
 ## Development
 
+### Pre-requisites
+
+- `git`
+- `go` version 1.17, with the `GOPATH` environment variable set
+- `node`
+- `yarn`
+
 ### Cloning
 
 - `git clone https://github.com/coder/coder`
@@ -23,6 +30,9 @@ This repository contains source code for Coder V2. Additional documentation:
 ### Building
 
 - `make build`
+- `make install`
+
+The `coder` CLI binary will now be available at `$GOPATH/bin/coder`
 
 ### Development