diff --git a/build.sh b/build.sh
deleted file mode 100644
index 673bbd1..0000000
--- a/build.sh
+++ /dev/null
@@ -1,27 +0,0 @@
-#!/usr/bin/env bash
-set -euo pipefail
-
-workdir="$PWD/repo"
-
-rm -rf "$workdir"
-mkdir -p "$workdir"
-
-git init "$workdir"
-cd "$workdir"
-
-git remote add origin "https://${INPUT_GIT_USER}:${INPUT_GIT_TOKEN}@${INPUT_GIT_BASE_URL}/${INPUT_GIT_REPOSITORY}.git"
-git fetch --depth=1 origin "${INPUT_GIT_SHA}"
-git checkout --detach FETCH_HEAD
-
-full_image="${INPUT_IMAGE_NAME}:${INPUT_IMAGE_TAG}"
-
-docker build \
-  -f "${INPUT_DOCKERFILE}" \
-  -t "${full_image}" \
-  "${INPUT_CONTEXT}"
-
-if [ "${INPUT_PUSH}" = "true" ]; then
-  echo "${INPUT_REGISTRY_TOKEN}" | docker login "${INPUT_REGISTRY}" -u "${INPUT_REGISTRY_USER}" --password-stdin
-  docker tag "${full_image}" "${INPUT_REGISTRY}/${full_image}"
-  docker push "${INPUT_REGISTRY}/${full_image}"
-fi