setup a pem key if required for builds

plugin.go

@@ -59,6 +59,20 @@ type (
 // Exec executes the plugin
 func (p Plugin) Exec() error {
 
+	// Install a extra PEM key if required
+	if len(os.Getenv("PEM_NAME")) > 0 {
+		value, exists := os.LookupEnv("PEM_CONTENTS")
+		if !exists {
+			value = "-----BEGIN RSA PRIVATE KEY-----\n\n-----END RSA PRIVATE KEY-----\n"
+		}
+		err := installExtraPem(os.Getenv("PEM_NAME"), value)
+
+		if err != nil {
+			return err
+		}
+	}
+
+
 	// Install a Github SSH key
 	if len(os.Getenv("GITHUB_PRIVATE_SSH_KEY")) > 0 {
 		sshconfErr := installGithubSsh(os.Getenv("GITHUB_PRIVATE_SSH_KEY"))

terraform.go

@@ -17,6 +17,14 @@ type (
 	}
 )
 
+func installExtraPem(pemName string, pemContents string) error {
+	err := ioutil.WriteFile(os.Getenv("HOME")+"/.ssh/"+pemName, []byte(pemContents), 0600)
+	if err != nil {
+		return err
+	}
+	return nil
+}
+
 func installGithubSsh(githubSshPrivate string) error {
 	os.Mkdir(os.Getenv("HOME")+"/.aws", 0700)
 	myconf := []byte("Host github.com\n    StrictHostKeyChecking no\n    UserKnownHostsFile=/dev/null\n")