update charts
diff --git a/charts/k8s-gerrit/container-images/gerrit/Dockerfile b/charts/k8s-gerrit/container-images/gerrit/Dockerfile
new file mode 100644
index 0000000..6a2eebc
--- /dev/null
+++ b/charts/k8s-gerrit/container-images/gerrit/Dockerfile
@@ -0,0 +1,4 @@
+ARG TAG=latest
+FROM gerrit-base:${TAG}
+
+COPY tools/* /var/tools/
diff --git a/charts/k8s-gerrit/container-images/gerrit/README.md b/charts/k8s-gerrit/container-images/gerrit/README.md
new file mode 100644
index 0000000..2cd1b7a
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+++ b/charts/k8s-gerrit/container-images/gerrit/README.md
@@ -0,0 +1,13 @@
+# Gerrit image
+
+Container image for a Gerrit instance
+
+## Content
+
+* the [gerrit-base](../gerrit-base/README.md) image
+* `/var/tools/start`: start script
+
+## Start
+
+* starts Gerrit via start script `/var/tools/start` either as primary or replica
+ depending on the provided `gerrit.config`
diff --git a/charts/k8s-gerrit/container-images/gerrit/tools/start b/charts/k8s-gerrit/container-images/gerrit/tools/start
new file mode 100755
index 0000000..2073181
--- /dev/null
+++ b/charts/k8s-gerrit/container-images/gerrit/tools/start
@@ -0,0 +1,13 @@
+#!/bin/ash
+GERRIT_DAEMON_OPTS="--console-log --enable-httpd"
+
+IS_REPLICA=$(git config -f /var/gerrit/etc/gerrit.config --get container.replica)
+if [[ "$IS_REPLICA" == "true" ]]; then
+ GERRIT_DAEMON_OPTS="$GERRIT_DAEMON_OPTS --replica"
+fi
+
+JAVA_OPTIONS=$(git config --file /var/gerrit/etc/gerrit.config --get-all container.javaOptions)
+JAVA_OPTIONS="$JAVA_OPTIONS -Dgerrit.instanceId=$POD_NAME"
+java ${JAVA_OPTIONS} -jar /var/gerrit/bin/gerrit.war daemon \
+ -d /var/gerrit \
+ $GERRIT_DAEMON_OPTS