From 3985fdcca4f0e60b4c89a5d97b91042adc2ace9d Mon Sep 17 00:00:00 2001
From: Jose Diaz-Gonzalez <email@josediazgonzalez.com>
Date: Sun, 9 Mar 2025 07:23:21 -0400
Subject: [PATCH] feat: allow --volume flags to be passed to pack at buildtime

Closes #7119
---
 plugins/builder-pack/builder-build | 30 +++++++++++++++++++++++++++++-
 1 file changed, 29 insertions(+), 1 deletion(-)

diff --git a/plugins/builder-pack/builder-build b/plugins/builder-pack/builder-build
index fee85cc65..5557a0d4e 100755
--- a/plugins/builder-pack/builder-build
+++ b/plugins/builder-pack/builder-build
@@ -37,7 +37,35 @@ trigger-builder-pack-builder-build() {
   fi
   plugn trigger pre-build "$BUILDER_TYPE" "$APP" "$SOURCECODE_WORK_DIR"
 
-  pack build "$IMAGE" --builder "$DOKKU_CNB_BUILDER" --path "$SOURCECODE_WORK_DIR" --default-process web "${ENV_ARGS[@]}"
+  local DOCKER_ARGS=$(: | plugn trigger docker-args-build "$APP" "$BUILDER_TYPE")
+  [[ "$DOKKU_TRACE" ]] && DOCKER_ARGS+=" --env=TRACE=true "
+  DOCKER_ARGS+=$(: | plugn trigger docker-args-process-build "$APP" "$BUILDER_TYPE")
+
+  DOCKER_ARGS=" $DOCKER_ARGS "
+  declare -a ARG_ARRAY
+  eval "ARG_ARRAY=($DOCKER_ARGS)"
+
+  eval set -- "$DOCKER_ARGS"
+
+  declare -a PACK_ARGS
+  while true; do
+    case "$1" in
+      --volume=* | -v=*)
+        PACK_ARGS+=("$1")
+        shift
+        ;;
+      --volume | -v)
+        PACK_ARGS+=("--volume")
+        PACK_ARGS+=("$2")
+        shift 2
+        ;;
+      *)
+        break
+        ;;
+    esac
+  done
+
+  pack build "$IMAGE" --builder "$DOKKU_CNB_BUILDER" --path "$SOURCECODE_WORK_DIR" --default-process web "${PACK_ARGS[@]}" "${ENV_ARGS[@]}"
   docker-image-labeler relabel --label=dokku --label=org.label-schema.schema-version=1.0 --label=org.label-schema.vendor=dokku --label=com.dokku.image-stage=build --label=com.dokku.builder-type=pack --label=com.dokku.app-name=$APP "$IMAGE"
 
   # ensure we have a port mapping