diff --git a/CHANGELOG.md b/CHANGELOG.md
index 0fee47a..1219d3a 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -7,6 +7,13 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## [Unreleased]
 
+## [v4.9.0-2] - 2023-04-21
+### Changed
+- Update base image to Version 3.15.8-1 (#22)
+
+### Removed
+- curl, wget (#22)
+
 ## [v4.9.0-1] - 2022-04-13
 ### Fixed
 - Upgrade zlib to fix [CVE-2018-25032](https://security.alpinelinux.org/vuln/CVE-2018-25032); #13
diff --git a/Dockerfile b/Dockerfile
index f00b30d..2c466fe 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,11 +1,17 @@
-FROM registry.cloudogu.com/official/base:3.15.3-1
+FROM registry.cloudogu.com/official/base:3.15.8-1 as swaggerui
+ENV SWAGGERUI_VERSION=4.9.0-1 \
+    SWAGGERUI_ZIP_SHA256="0bfecf30a09247936eed6ec2d5d8ddba3b1a847e24017cd3876ddce5b33736ce"
+RUN apk update && apk add curl
+RUN curl -Lsk --fail --silent --location --retry 3 https://github.com/cloudogu/swagger-ui/releases/download/v${SWAGGERUI_VERSION}/swagger-ui-${SWAGGERUI_VERSION}.zip -o /tmp/swagger-ui.zip
+RUN echo "${SWAGGERUI_ZIP_SHA256} */tmp/swagger-ui.zip" | sha256sum -c -
+RUN unzip /tmp/swagger-ui.zip -d /tmp
+
+FROM registry.cloudogu.com/official/base:3.15.8-1
 LABEL NAME="official/swaggerui" \
-      VERSION="4.9.0-1" \
+      VERSION="4.9.0-2" \
       maintainer="hello@cloudogu.com"
 
 ENV SERVICE_TAGS=webapp \
-SWAGGERUI_VERSION=4.9.0-1 \
-SWAGGERUI_ZIP_SHA256="0bfecf30a09247936eed6ec2d5d8ddba3b1a847e24017cd3876ddce5b33736ce" \
 NGINX_HOME="/var/www/html"
 
 COPY resources /
@@ -22,20 +28,16 @@ RUN set -x -o errexit -o nounset -o pipefail \
   && ln -sf /dev/stderr /var/log/nginx/error.log \
    # cleanup apk cache
   && rm -rf /var/cache/apk/* \
-  && mkdir -p ${NGINX_HOME} \
-  # install swaggerui from fork https://github.com/cloudogu/swagger-ui/releases/ \
-  && curl -Lsk --fail --silent --location --retry 3 https://github.com/cloudogu/swagger-ui/releases/download/v${SWAGGERUI_VERSION}/swagger-ui-${SWAGGERUI_VERSION}.zip -o /tmp/swagger-ui.zip  \
-  && echo "${SWAGGERUI_ZIP_SHA256} */tmp/swagger-ui.zip" | sha256sum -c - \
-  && unzip /tmp/swagger-ui.zip -d ${NGINX_HOME} \
-  && mv ${NGINX_HOME}/dist/* ${NGINX_HOME} \
-  # cleanup
-  && rm -r ${NGINX_HOME}/dist && rm /tmp/swagger-ui.zip
+  && mkdir -p ${NGINX_HOME}
+
+# install swaggerui from fork https://github.com/cloudogu/swagger-ui/releases/ \
+COPY --from=swaggerui /tmp/dist/* ${NGINX_HOME}/
 
 # copy files
 # Define working directory.
 WORKDIR /etc/nginx
 
-HEALTHCHECK CMD doguctl healthy swaggerui || exit 1
+HEALTHCHECK --interval=5s CMD doguctl healthy swaggerui || exit 1
 
 # Expose ports.
 EXPOSE 8080
diff --git a/docs/development/local_setup_de.md b/docs/development/local_setup_de.md
index 1832e3e..5e8cd20 100644
--- a/docs/development/local_setup_de.md
+++ b/docs/development/local_setup_de.md
@@ -2,6 +2,7 @@
 
 ## Anleitung
 
+(Achtung veraltet!)
 ```bash
 Auf dem Host System
 1. cd swaggerui (ins swaggerui dogu repo)
@@ -9,4 +10,17 @@ Auf dem Host System
 3. git submodule update (zieht sich cloudogu/swagger-ui)
 Im lokalen CES
 4. cd swaggerui && cesapp build . && cesapp start swaggerui
-```
\ No newline at end of file
+```
+
+(ab v4.0.0-1)
+```
+Releases werden in https://github.com/cloudogu/swagger-ui/releases gepfelgt
+und entsprechend im Dockerfile referenziert. Das Release beinhaltet aktuell den dist folder.
+
+1. Artefakt erstellen
+im repository root
+zip -r swagger-ui-4.9.0-1.zip dist
+2. Checksum generieren
+sha256sum swagger-ui-4.9.0-1.zip > swagger-ui-4.9.0-1.zip.sha256
+3. Dem Release anfügen https://github.com/cloudogu/swagger-ui/releases
+```
diff --git a/docs/development/local_setup_en.md b/docs/development/local_setup_en.md
index 3e0c28d..0b9d01d 100644
--- a/docs/development/local_setup_en.md
+++ b/docs/development/local_setup_en.md
@@ -2,6 +2,7 @@
 
 ## Instruction
 
+(Attention changed since v4.9.0-1)
 ```bash
 On the host system
 1. cd swaggerui (into swaggerui dogu repo)
@@ -9,4 +10,16 @@ On the host system
 3. git submodule update (pulls cloudogu/swagger-ui)
 In the local CES
 4. cd swaggerui && cesapp build . && cesapp start swaggerui
-```
\ No newline at end of file
+```
+
+### Setup since 4.9.0-1
+Releases can be found here https://github.com/cloudogu/swagger-ui/releases.
+please reference new version inside the Dockerfile. The release currently consists only of the dist folder.
+```
+1. create artefact zip
+inside the src repository root (https://github.com/cloudogu/swagger-ui/)
+zip -r swagger-ui-4.9.0-1.zip dist
+2. generate the checksum 
+sha256sum swagger-ui-4.9.0-1.zip > swagger-ui-4.9.0-1.zip.sha256
+3. add the artefacts to the release https://github.com/cloudogu/swagger-ui/releases
+```
diff --git a/dogu.json b/dogu.json
index d7cf015..9768594 100644
--- a/dogu.json
+++ b/dogu.json
@@ -1,6 +1,6 @@
 {
   "Name": "official/swaggerui",
-  "Version": "4.9.0-1",
+  "Version": "4.9.0-2",
   "DisplayName": "Swagger UI",
   "Description": "Swagger UI displays your openAPI specification.",
   "Logo": "https://github.com/cloudogu/swagger-ui/blob/master/src/img/logo_small.png?raw=true",