Add an install aws cli function

So that we allow this package to manage aws installation on cloud.gov
when it needs it.

internal/util/installaws.go

@@ -0,0 +1,49 @@
+package util
+
+import (
+	"os"
+	"strings"
+
+	"github.com/bitfield/script"
+	"gov.gsa.fac.cgov-util/internal/logging"
+)
+
+func InstallAWS() {
+	// curl -x $https_proxy -L "https://awscli.amazonaws.com/awscli-exe-linux-x86_64.zip" -o "awscliv2.zip"
+	getaws := []string{
+		"curl",
+		"-x",
+		os.Getenv("https_proxy"),
+		"-L",
+		"https://awscli.amazonaws.com/awscli-exe-linux-x86_64.zip",
+		"-o",
+		"awscliv2.zip",
+	}
+	curlaws := strings.Join(getaws[:], " ")
+	logging.Logger.Printf("Fetching aws cli via curl...")
+	script.Exec(curlaws)
+
+	// unzip awscliv2.zip && rm awscliv2.zip
+	unzipaws := []string{
+		"unzip",
+		"awscliv2.zip",
+		"&&",
+		"rm",
+		"awscliv2.zip",
+	}
+	logging.Logger.Printf("Unzipping aws cli...")
+	unzip := strings.Join(unzipaws[:], " ")
+	script.Exec(unzip)
+
+	// ./aws/install -i ~/usr -b ~/bin
+	installaws := []string{
+		"./aws/install",
+		"-i",
+		"~/usr",
+		"-b",
+		"~/bin",
+	}
+	logging.Logger.Printf("Installing aws to bin...")
+	install := strings.Join(installaws[:], " ")
+	script.Exec(install)
+}

main.go

@@ -9,6 +9,8 @@ import (
 	"golang.org/x/exp/slices"
 
 	"gov.gsa.fac.cgov-util/cmd"
+	"gov.gsa.fac.cgov-util/internal/logging"
+	"gov.gsa.fac.cgov-util/internal/util"
 	"gov.gsa.fac.cgov-util/internal/vcap"
 )
 
@@ -34,7 +36,13 @@ func readConfig() {
 }
 
 func main() {
-
+	if slices.Contains([]string{"DEV", "PREVIEW", "STAGING", "PRODUCTION"}, os.Getenv("ENV")) {
+		logging.Logger.Printf("ENV detected to be a cloud.gov environment. Installing AWS CLI.")
+		util.InstallAWS()
+	} else {
+		logging.Logger.Printf("ENV set to local, aws not necessary to install.")
+	}
 	readConfig()
+	util.SetPaths(os.Getenv("ENV"))
 	cmd.Execute()
 }