diff --git a/docker/start_app.sh b/docker/start_app.sh
index 092475483b..8801cb3811 100755
--- a/docker/start_app.sh
+++ b/docker/start_app.sh
@@ -21,9 +21,9 @@ source $DOCKER_FOLDER/docker_build_common.sh
 declare -r VERSION=${REVISION:-${VERSION:-main}}
 declare -r ACCOUNT=${ACCOUNT:-opensource4you}
 if [[ "$VERSION" == "main" ]]; then
-  declare -r IMAGE_NAME="ghcr.io/${ACCOUNT}/astraea/app:latest"
+  declare -r IMAGE_NAME="ghcr.io/${ACCOUNT,,}/astraea/app:latest"
 else
-  declare -r IMAGE_NAME="ghcr.io/${ACCOUNT}/astraea/app:$VERSION"
+  declare -r IMAGE_NAME="ghcr.io/${ACCOUNT,,}/astraea/app:$VERSION"
 fi
 declare -r DOCKERFILE=$DOCKER_FOLDER/app.dockerfile
 declare -r JMX_PORT=${JMX_PORT:-"$(getRandomPort)"}
diff --git a/docker/start_broker.sh b/docker/start_broker.sh
index 8f5867b799..20223e37a8 100755
--- a/docker/start_broker.sh
+++ b/docker/start_broker.sh
@@ -44,7 +44,7 @@ declare -r JMX_OPTS="-Dcom.sun.management.jmxremote \
   -Djava.rmi.server.hostname=$ADDRESS"
 declare -r HEAP_OPTS="${HEAP_OPTS:-"-Xmx2G -Xms2G"}"
 declare -r BROKER_PROPERTIES="/tmp/server-${BROKER_PORT}.properties"
-declare -r IMAGE_NAME="ghcr.io/${ACCOUNT}/astraea/broker:$KAFKA_VERSION"
+declare -r IMAGE_NAME="ghcr.io/${ACCOUNT,,}/astraea/broker:$KAFKA_VERSION"
 declare -r METADATA_VERSION=${METADATA_VERSION:-""}
 # cleanup the file if it is existent
 [[ -f "$BROKER_PROPERTIES" ]] && rm -f "$BROKER_PROPERTIES"
diff --git a/docker/start_controller.sh b/docker/start_controller.sh
index 12bc1828aa..d3d4b012a4 100755
--- a/docker/start_controller.sh
+++ b/docker/start_controller.sh
@@ -61,7 +61,7 @@ declare -r JMX_OPTS="-Dcom.sun.management.jmxremote \
   -Djava.rmi.server.hostname=$ADDRESS"
 declare -r HEAP_OPTS="${HEAP_OPTS:-"-Xmx2G -Xms2G"}"
 declare -r CONTROLLER_PROPERTIES="/tmp/controller-${CONTROLLER_PORT}.properties"
-declare -r IMAGE_NAME="ghcr.io/${ACCOUNT}/astraea/controller:$KAFKA_VERSION"
+declare -r IMAGE_NAME="ghcr.io/${ACCOUNT,,}/astraea/controller:$KAFKA_VERSION"
 declare -r METADATA_VERSION=${METADATA_VERSION:-""}
 # cleanup the file if it is existent
 [[ -f "$CONTROLLER_PROPERTIES" ]] && rm -f "$CONTROLLER_PROPERTIES"
diff --git a/docker/start_worker.sh b/docker/start_worker.sh
index d2449e2ea1..2b19979e86 100755
--- a/docker/start_worker.sh
+++ b/docker/start_worker.sh
@@ -34,7 +34,7 @@ declare -r JMX_OPTS="-Dcom.sun.management.jmxremote \
 declare -r HEAP_OPTS="${HEAP_OPTS:-"-Xmx2G -Xms2G"}"
 declare -r WORKER_PROPERTIES="/tmp/worker-${WORKER_PORT}.properties"
 declare -r WORKER_PLUGIN_PATH=${WORKER_PLUGIN_PATH:-/tmp/worker-plugins}
-declare -r IMAGE_NAME="ghcr.io/${ACCOUNT}/astraea/worker:$VERSION"
+declare -r IMAGE_NAME="ghcr.io/${ACCOUNT,,}/astraea/worker:$VERSION"
 declare -r SCRIPT_LOCATION_IN_CONTAINER="./bin/connect-distributed.sh"
 # cleanup the file if it is existent
 [[ -f "$WORKER_PROPERTIES" ]] && rm -f "$WORKER_PROPERTIES"