fix(ci): publish registry blobs in bounded chunks

src/test/publish-container-harness.sh

@@ -12,3 +12,18 @@ docker() {
  fi
 }
 export -f git tar node docker
+
+curl() {
+ local output="${@: -1}"
+ cat > "$output" <<'MOCK'
+#!/usr/bin/env bash
+echo "regctl $*" >> "$TEST_DIR/calls"
+if [[ "$1 $2" = "image import" && "$SCENARIO" = upload-fails ]]; then exit 1; fi
+if [[ "$1 $2" = "manifest get" ]]; then
+ if [[ "$SCENARIO" = wrong-config ]]; then echo sha256:wrong; else echo sha256:candidate; fi
+fi
+MOCK
+}
+sha256sum() { cat >/dev/null; [[ "$SCENARIO" != bad-checksum ]]; }
+uname() { echo x86_64; }
+export -f curl sha256sum uname