set -e in build scripts

We're hitting cases where errors happen and the script proceeds,
making it harder to pinpoint errors.

Signed-off-by: John Helmert III <[email protected]>

build-python.sh

@@ -1,5 +1,7 @@
 #!/usr/bin/env bash
 
+set -e
+
 NAME=python
 VERSION=${VERSION:-$(date -u +%Y%m%d)}
 VERSION_SUFFIX="-${VERSION}"

build.sh

@@ -1,9 +1,11 @@
 #!/bin/bash
 
-# Used to create Gentoo stage3 and portage containers simply by specifying a 
+# Used to create Gentoo stage3 and portage containers simply by specifying a
 # TARGET env variable.
 # Example usage: TARGET=stage3-amd64 ./build.sh
 
+set -e
+
 if [[ -z "$TARGET" ]]; then
 	echo "TARGET environment variable must be set e.g. TARGET=stage3-amd64-openrc."
 	exit 1

deploy-manifests.sh

@@ -1,5 +1,7 @@
 #!/bin/bash
 
+set -e
+
 if [[ -z "$TARGET" ]]; then
 	echo "TARGET environment variable must be set e.g. TARGET=stage3:latest."
 	exit 1

deploy.sh

@@ -1,5 +1,7 @@
 #!/bin/bash
 
+set -e
+
 if [[ -z "$TARGET" ]]; then
 	echo "TARGET environment variable must be set e.g. TARGET=stage3-amd64-openrc."
 	exit 1