Add command line options to build.sh

build.sh

@@ -1,21 +1,51 @@
-#!/bin/sh -eu
-case "${1:-}" in
-armv7hf | aarch64) ;;
-*)
-	# error
-	echo "Invalid argument '${1:-}', valid arguments are armv7hf or aarch64"
+#!/bin/bash -eu
+
+imagetag="docker-acap-with-compose:1.0"
+
+function exit_with_message {
+	echo "$1"
+	echo
+	echo "Usage: $0 ARCH [ --plain ] [ --cache ] [ --image-tag IMAGETAG ]"
+	echo
+	echo "ARCH must be 'armv7hf' or 'aarch64'"
+	echo "--plain will simplify the Docker progress bar."
+	echo "--cache will enable Docker's caching mechanism."
+	echo "--image-tag sets the supplied tag of the image. Default is $imagetag."
 	exit 1
-	;;
+}
+
+arch="${1:-}"
+
+case "$arch" in
+armv7hf | aarch64) ;;
+*) exit_with_message "Invalid architecture '$arch'" ;;
 esac
+shift
+
+progress_arg=
+cache_arg=--no-cache
 
-imagetag="${2:-docker-acap-with-compose:1.0}"
+while (($#)); do
+	case "$1" in
+	--plain) progress_arg="--progress plain" ;;
+	--cache) cache_arg= ;;
+	--image-tag)
+		shift
+		imagetag="$1"
+		;;
+	*) exit_with_message "Invalid argument '$1'" ;;
+	esac
+	shift
+done
 
 # Build and copy out the acap
-docker buildx build --build-arg ACAPARCH="$1" \
+# shellcheck disable=SC2086
+docker buildx build --build-arg ACAPARCH="$arch" \
 	--build-arg HTTP_PROXY="${HTTP_PROXY:-}" \
 	--build-arg HTTPS_PROXY="${HTTPS_PROXY:-}" \
 	--file Dockerfile \
-	--no-cache \
+	$progress_arg \
+	$cache_arg \
 	--tag "$imagetag" .
 
-docker cp "$(docker create "$imagetag")":/opt/app/ ./build-"$1"
+docker cp "$(docker create "$imagetag")":/opt/app/ ./build-"$arch"