diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
new file mode 100644
index 0000000..a82ce96
--- /dev/null
+++ b/.gitlab-ci.yml
@@ -0,0 +1,18 @@
+variables:
+  CONTAINER_NAME: thallian/keycloak
+
+build:
+  stage: build
+  image:
+    name: gcr.io/kaniko-project/executor:debug
+    entrypoint: [""]
+  script:
+    - mkdir -p /kaniko/.docker
+    - echo "{\"auths\":{\"$CI_REGISTRY\":{\"auth\":\"$(printf "%s:%s" "$CI_REGISTRY_USER" "$CI_REGISTRY_PASSWORD" | base64 | tr -d '\n')\"}}}" > /kaniko/.docker/config.json
+    - >-
+      /kaniko/executor
+      --context "$CI_PROJECT_DIR"
+      --dockerfile "$CI_PROJECT_DIR/Dockerfile"
+      --destination "$CONTAINER_NAME:$CI_COMMIT_SHA"
+      --destination "$CONTAINER_NAME:$CI_COMMIT_REF_NAME"
+      --destination "$CONTAINER_NAME:latest"
diff --git a/Containerfile b/Dockerfile
similarity index 58%
rename from Containerfile
rename to Dockerfile
index 45626b7..dd7d332 100644
--- a/Containerfile
+++ b/Dockerfile
@@ -1,27 +1,25 @@
-FROM docker.io/alpine:3.21 AS builder
+FROM docker.io/alpine:3.16 AS builder
 
-ENV VERSION=26.2.5
-ENV SHA256_SUM=e99e5f8783ea8f1cc04140b7033ea7291ff9898a088f37399b88651d81238f88
+ENV VERSION=19.0.1
+ENV SHA256_SUM=b1e9f89a6d02b9bf43848a970c69d94fb7e75c75fc8ebe2f69a1b7d2e0739733
 
 RUN wget "https://github.com/keycloak/keycloak/releases/download/$VERSION/keycloak-$VERSION.tar.gz"
 RUN echo "$SHA256_SUM  keycloak-$VERSION.tar.gz" | sha256sum -c - || exit 1
 RUN mkdir -p /keycloak
 RUN tar xvf keycloak-$VERSION.tar.gz -C /keycloak --strip 1
 
-FROM docker.io/thallian/alpine-s6:3.21-3.2.0.2
-
-ENV JAVA_OPTS_APPEND="-Djava.net.preferIPv4Stack=false -Djava.net.preferIPv6Addresses=true"
+FROM docker.io/thallian/alpine-s6:3.16
 
 RUN addgroup -g 2222 keycloak
 RUN adduser -h /home/keycloak -u 2222 -D -G keycloak keycloak
 
 RUN apk add --no-cache \
-	openjdk21-jre-headless \
+	openjdk17-jre-headless \
 	bash
 
 COPY --from=builder --chown=keycloak:keycloak /keycloak /home/keycloak/server
 
-RUN /home/keycloak/server/bin/kc.sh build --db=postgres --metrics-enabled=true
+RUN /home/keycloak/server/bin/kc.sh build --db postgres 
 RUN chown -R keycloak:keycloak /home/keycloak
 
 ADD /rootfs /
diff --git a/Jenkinsfile b/Jenkinsfile
deleted file mode 100644
index a8bfde8..0000000
--- a/Jenkinsfile
+++ /dev/null
@@ -1 +0,0 @@
-multiarch_container()
diff --git a/rootfs/etc/s6-overlay/s6-rc.d/keycloak/run b/rootfs/etc/s6-overlay/s6-rc.d/keycloak/run
index fd9ed0c..f20d0da 100644
--- a/rootfs/etc/s6-overlay/s6-rc.d/keycloak/run
+++ b/rootfs/etc/s6-overlay/s6-rc.d/keycloak/run
@@ -8,4 +8,4 @@ exec s6-setuidgid keycloak /home/keycloak/server/bin/kc.sh start \
 	--db-password "$DB_PASSWORD" \
 	--hostname "$HOSTNAME" \
 	--http-enabled true \
-  --proxy-headers xforwarded
+	--proxy edge