diff --git a/Dockerfile b/Dockerfile
index abc4310..2ec7175 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,17 +1,16 @@
-FROM flownative/base:bookworm
+FROM ubuntu:latest
 
-# For Helm releases see: https://github.com/helm/helm/releases
-ENV HELM_VERSION v3.16.1
+ENV HELM_VERSION=v3.16.1
 ENV HELM_HOME=/root/.helm
 
-# We need Git for "helm plugin install"
 RUN apt-get update \
-    && apt-get install git \
+    && apt-get install git curl -y \
     && rm -rf /var/lib/apt/lists/* \
     && rm -rf /var/log/apt \
     && rm -rf /var/log/dpkg.log
 
-RUN curl -sSL https://get.helm.sh/helm-${HELM_VERSION}-linux-amd64.tar.gz | tar xz \
+# For Helm releases see: https://github.com/helm/helm/releases
+RUN curl -sSL "https://get.helm.sh/helm-v3.16.1-linux-amd64.tar.gz" | tar xz \
     && mv linux-amd64/helm /usr/local/bin/helm \
     && rm -rf linux-amd64
 
diff --git a/README.md b/README.md
index 1f7f587..e932241 100644
--- a/README.md
+++ b/README.md
@@ -5,3 +5,23 @@ This is the actual implementation of the
 The actual GitHub action refers to a pre-built image in its
 `Dockerfile`, so that the action image does not have to be re-built on
 every use.
+
+## Testing
+
+To test this action locally, build the image and run the container as follows:
+
+```shell
+docker buildx build --platform linux/amd64 \
+  --tag flownative/action-helm-release:dev --load .
+
+docker run --name workflow --rm \
+  -e INPUT_APP_VERSION=2.133.1+5 
+  -e INPUT_CHART_VERSION=2.133.1+5 \
+  -e INPUT_REGISTRY_HOST=dev.harbor.example.com \
+  -e INPUT_REPOSITORY_PATH=acme-charts \
+  -e INPUT_CHART_NAME=beach-my-app \
+  -e INPUT_CHARTS_FOLDER=/application/Helm \
+  -e INPUT_REPOSITORY_USER=robot#acme-charts+github-test \
+  -e INPUT_REPOSITORY_PASSWORD=… \
+  -v=$(pwd):/application docker.io/flownative/action-helm-release:dev
+```
diff --git a/entrypoint.sh b/entrypoint.sh
index f419895..0d43161 100644
--- a/entrypoint.sh
+++ b/entrypoint.sh
@@ -1,8 +1,6 @@
 #!/bin/bash
 set -ex
 
-helm plugin install https://github.com/chartmuseum/helm-push.git
-
 export INPUT_CHARTS_FOLDER=${INPUT_CHARTS_FOLDER:-.}
 
 if [ -z "${INPUT_CHART_NAME}" ]; then
@@ -10,8 +8,13 @@ if [ -z "${INPUT_CHART_NAME}" ]; then
   exit 1
 fi
 
-if [ -z "${INPUT_REPOSITORY_URL}" ]; then
-  echo "repository_url is not set"
+if [ -z "${INPUT_REGISTRY_HOST}" ]; then
+  echo "registry_host is not set"
+  exit 1
+fi
+
+if [ -z "${INPUT_REPOSITORY_PATH}" ]; then
+  echo "repository_path is not set"
   exit 1
 fi
 
@@ -40,7 +43,7 @@ INPUT_APP_VERSION=$(echo "${INPUT_APP_VERSION}" | sed -e 's|refs/tags||' | sed -
 
 cd "${INPUT_CHARTS_FOLDER}"
 
-helm inspect chart "${INPUT_CHART_NAME}"
+helm inspect chart "${INPUT_CHARTS_FOLDER}"/"${INPUT_CHART_NAME}"
 helm package --app-version "${INPUT_APP_VERSION}" --version "${INPUT_CHART_VERSION}" "${INPUT_CHART_NAME}"
-echo "${INPUT_REPOSITORY_PASSWORD}" | helm registry login -u "${INPUT_REPOSITORY_USER}" --password-stdin "${INPUT_REPOSITORY_URL}"
-helm push --force "${INPUT_CHART_NAME}-${INPUT_CHART_VERSION}.tgz" "${INPUT_REPOSITORY_URL}" "${INPUT_REPOSITORY_URL}"
+echo "${INPUT_REPOSITORY_PASSWORD}" | helm registry login -u "${INPUT_REPOSITORY_USER}" --password-stdin "${INPUT_REGISTRY_HOST}"
+helm push "${INPUT_CHART_NAME}-${INPUT_CHART_VERSION}.tgz" "oci://${INPUT_REGISTRY_HOST}/${INPUT_REPOSITORY_PATH}/${INPUT_CHART_NAME}"