diff --git a/dockerfiles/build.include b/dockerfiles/build.include
index ad791d014b..641be64a26 100755
--- a/dockerfiles/build.include
+++ b/dockerfiles/build.include
@@ -8,7 +8,7 @@
 #
 
 set -e
-# set -u
+set -u
 
 IMAGE_ALIASES=${IMAGE_ALIASES:-}
 ERROR=${ERROR:-}
@@ -103,36 +103,6 @@ build() {
       DIR=$(cd "$(dirname "$0")"; pwd)
   fi
 
-  if [ -z $BUILDER ]; then
-      echo "BUILDER not specified, trying with podman"
-      BUILDER=$(command -v podman || true)
-      if [[ ! -x $BUILDER ]]; then
-          echo "[WARNING] podman is not installed, trying with buildah"
-          BUILDER=$(command -v buildah || true)
-          if [[ ! -x $BUILDER ]]; then
-              echo "[WARNING] buildah is not installed, trying with docker"
-              BUILDER=$(command -v docker || true)
-              if [[ ! -x $BUILDER ]]; then
-                  echo "[ERROR] neither docker, buildah, nor podman are installed. Aborting"; exit 1
-              fi
-          else
-              BUILD_COMMAND="bud"
-          fi
-      fi
-  else
-      if [[ ! -x $(command -v "$BUILDER" || true) ]]; then
-          echo "Builder $BUILDER is missing. Aborting."; exit 1
-      fi
-      if [[ $BUILDER =~ "docker" || $BUILDER =~ "podman" ]]; then
-          if [[ ! $($BUILDER ps) ]]; then
-              echo "Builder $BUILDER is not functioning. Aborting."; exit 1
-          fi
-      fi
-      if [[ $BUILDER =~ "buildah" ]]; then
-          BUILD_COMMAND="bud"
-      fi
-  fi
-
   # If Dockerfile is empty, build all Dockerfiles
   if [ -z ${DOCKERFILE} ]; then
     DOCKERFILES_TO_BUILD="$(ls ${DIR}/Dockerfile*)"
@@ -167,14 +137,14 @@ build_image() {
     -e "s;\${BUILD_PREFIX};${PREFIX};" \
     -e "s;\${BUILD_TAG};${TAG};" \
     > ${DIR}/.Dockerfile
-  cd "${DIR}" && "${BUILDER}" build -f ${DIR}/.Dockerfile -t ${IMAGE_NAME} ${BUILD_ARGS} .
+  cd "${DIR}" && docker build -f ${DIR}/.Dockerfile -t ${IMAGE_NAME} ${BUILD_ARGS} .
   DOCKER_BUILD_STATUS=$?
   rm ${DIR}/.Dockerfile
   if [ $DOCKER_BUILD_STATUS -eq 0 ]; then
     printf "Build of ${BLUE}${IMAGE_NAME} ${GREEN}[OK]${NC}\n"
     if [ ! -z "${SHA_TAG}" ]; then
       SHA_IMAGE_NAME=${ORGANIZATION}/${PREFIX}-${NAME}:${SHA_TAG}
-      "${BUILDER}" tag ${IMAGE_NAME} ${SHA_IMAGE_NAME}
+      docker tag ${IMAGE_NAME} ${SHA_IMAGE_NAME}
       DOCKER_TAG_STATUS=$?
       if [ $DOCKER_TAG_STATUS -eq 0 ]; then
         printf "Re-tagging with SHA based tag ${BLUE}${SHA_IMAGE_NAME} ${GREEN}[OK]${NC}\n"
@@ -186,7 +156,7 @@ build_image() {
     if [ ! -z "${IMAGE_ALIASES}" ]; then
       for TMP_IMAGE_NAME in ${IMAGE_ALIASES}
       do
-        "${BUILDER}" tag ${IMAGE_NAME} ${TMP_IMAGE_NAME}:${TAG}
+        docker tag ${IMAGE_NAME} ${TMP_IMAGE_NAME}:${TAG}
         DOCKER_TAG_STATUS=$?
         if [ $DOCKER_TAG_STATUS -eq 0 ]; then
           printf "  /alias ${BLUE}${TMP_IMAGE_NAME}:${TAG}${NC} ${GREEN}[OK]${NC}\n"
@@ -205,8 +175,8 @@ build_image() {
 }
 
 check_docker() {
-  if ! "${BUILDER}" ps > /dev/null 2>&1; then
-    output=$("${BUILDER}" ps)
+  if ! docker ps > /dev/null 2>&1; then
+    output=$(docker ps)
     printf "${RED}Docker not installed properly: ${output}${NC}\n"
     exit 1
   fi
@@ -216,12 +186,12 @@ docker_exec() {
   if has_docker_for_windows_client; then
     MSYS_NO_PATHCONV=1 docker.exe "$@"
   else
-    "$(which "${BUILDER}")" "$@"
+    "$(which docker)" "$@"
   fi
 }
 
 has_docker_for_windows_client() {
-  GLOBAL_HOST_ARCH=$("${BUILDER}" version --format {{.Client}})
+  GLOBAL_HOST_ARCH=$(docker version --format {{.Client}})
 
   if [[ "${GLOBAL_HOST_ARCH}" = *"windows"* ]]; then
     return 0