Add command environment variables config

README.md

@@ -74,6 +74,8 @@ build_delay: 200ms
 binary_name: refresh-build
 # any extra commands you want to send to the built binary when it is run:
 command_flags: []
+# any extra environment variables you want to send to the built binary when it is run:
+command_env: []
 # do you want to use colors when printing out log messages:
 enable_colors: true
 ```

cmd/init.go

@@ -23,6 +23,7 @@ var initCmd = &cobra.Command{
 			BuildDelay:         200,
 			BinaryName:         "refresh-build",
 			CommandFlags:       []string{},
+			CommandEnv:         []string{},
 			EnableColors:       true,
 		}
 		c.Dump(cfgFile)

refresh.yml

@@ -9,4 +9,5 @@ build_path: /tmp
 build_delay: 200ns
 binary_name: refresh-build
 command_flags: []
+command_env: []
 enable_colors: true

refresh/config.go

@@ -21,6 +21,7 @@ type Configuration struct {
 	BuildDelay         time.Duration `yaml:"build_delay"`
 	BinaryName         string        `yaml:"binary_name"`
 	CommandFlags       []string      `yaml:"command_flags"`
+	CommandEnv         []string      `yaml:"command_env"`
 	EnableColors       bool          `yaml:"enable_colors"`
 	LogName            string        `yaml:"log_name"`
 }

refresh/runner.go

@@ -36,6 +36,11 @@ func (m *Manager) runAndListen(cmd *exec.Cmd) error {
 	cmd.Stdin = os.Stdin
 	cmd.Stdout = os.Stdout
 
+	// Set the environment variables from config
+	if len(m.CommandEnv) != 0 {
+		cmd.Env = append(m.CommandEnv, os.Environ()...)
+	}
+
 	err := cmd.Start()
 	if err != nil {
 		return fmt.Errorf("%s\n%s", err, stderr.String())