Cleanup build scripts to reduce duplication

build-single.sh

@@ -0,0 +1,24 @@
+TARGET_NAME="$1-$2"
+DOCKERFILE="Dockerfile.$1.$2"
+
+TAG_UNIQUE_ID=`(git ls-tree HEAD; git diff-index HEAD) | sha256sum | cut -c-16`
+TAG_NAME="${TARGET_NAME}_${TAG_UNIQUE_ID}"
+OUT_DIR="out_$TARGET_NAME"
+
+docker pull cgutman/moonlight-packaging:$TAG_NAME
+PULL_EXIT_CODE=$?
+
+rm -rf $OUT_DIR
+
+set -e
+mkdir $OUT_DIR
+
+if [ $PULL_EXIT_CODE -eq 0 ]; then
+  echo Using pre-built Docker image - cgutman/moonlight-packaging:$TAG_NAME
+else
+  echo Pre-built image not available - building cgutman/moonlight-packaging:$TAG_NAME
+  docker build --pull -f $DOCKERFILE -t cgutman/moonlight-packaging:$TAG_NAME .
+  echo Built Docker image - cgutman/moonlight-packaging:$TAG_NAME
+fi
+
+docker run --rm --mount type=bind,source="$(pwd)"/$OUT_DIR,target=/out --mount type=bind,source="$(pwd)"/debian,target=/opt/debian -e COMMIT="$3" cgutman/moonlight-packaging:$TAG_NAME