Merge pull request #19 from buildkite/add-inherit-env-flag

Add --inherit-env for copying all env from parent shell

README.md

@@ -25,6 +25,7 @@ GLOBAL OPTIONS:
    --security-group value         Security groups to launch task in (required for FARGATE). Can be specified multiple times
    --subnet value                 Subnet to launch task in (required for FARGATE). Can be specified multiple times
    --env KEY=value, -e KEY=value  An environment variable to add in the form KEY=value or `KEY` (shorthand for `KEY=$KEY` to pass through an env var from the current host). Can be specified multiple times
+   --inherit-env, -E              Inherit all of the environment variables from the calling shell
    --help, -h                     show help
    --version, -v                  print the version
 ```

main.go

@@ -66,6 +66,10 @@ func main() {
 			Name:  "env, e",
 			Usage: "An environment variable to add in the form `KEY=value` or `KEY` (shorthand for `KEY=$KEY` to pass through an env var from the current host). Can be specified multiple times",
 		},
+		cli.BoolFlag{
+			Name:  "inherit-env, E",
+			Usage: "Inherit all of the environment variables from the calling shell",
+		},
 	}
 
 	app.Action = func(ctx *cli.Context) error {
@@ -89,6 +93,12 @@ func main() {
 		r.Subnets = ctx.StringSlice("subnet")
 		r.Environment = ctx.StringSlice("env")
 
+		if ctx.Bool("inherit-env") {
+			for _, env := range os.Environ() {
+				r.Environment = append(r.Environment, env)
+			}
+		}
+
 		if args := ctx.Args(); len(args) > 0 {
 			r.Overrides = append(r.Overrides, runner.Override{
 				Service: ctx.String("service"),