diff --git a/docs/docker/CURRENT_DOCKER_IMAGE_SIZE b/docs/docker/CURRENT_DOCKER_IMAGE_SIZE
new file mode 100644
index 0000000000..8173f4a997
--- /dev/null
+++ b/docs/docker/CURRENT_DOCKER_IMAGE_SIZE
@@ -0,0 +1,2 @@
+(generated with docker-image-size.sh)
+224M
diff --git a/docs/docker/docker-image-size.sh b/docs/docker/docker-image-size.sh
new file mode 100755
index 0000000000..b3b28d70dd
--- /dev/null
+++ b/docs/docker/docker-image-size.sh
@@ -0,0 +1,32 @@
+#!/bin/bash
+set -e
+set +x
+
+# This script computes **compressed image size with all its layers**.
+# This solution is based on https://stackoverflow.com/a/55156181/314883
+
+DOCKER_IMAGE_NAME="docker-image-to-count-compressed-size"
+FILE_NAME="docker-image-to-count-compressed-size"
+
+function cleanup() {
+  echo "-- Removing .tar if any"
+  rm -f "${FILE_NAME}.tar"
+  echo "-- Removing .tar.gz if any"
+  rm -f "${FILE_NAME}.tar.gz"
+  echo "-- Removing docker image if any"
+  docker rmi "${DOCKER_IMAGE_NAME}:bionic" >/dev/null
+}
+
+trap "cleanup; cd $(pwd -P)" EXIT
+cd "$(dirname "$0")"
+
+echo "-- Building image..."
+docker build -t "${DOCKER_IMAGE_NAME}:bionic" -f Dockerfile.bionic . >/dev/null
+echo "-- Saving .tar of the image..."
+docker save "${DOCKER_IMAGE_NAME}:bionic" > "${FILE_NAME}.tar"
+echo "-- Compressing image..."
+gzip "${FILE_NAME}.tar" >/dev/null
+
+echo "(generated with docker-image-size.sh)" > CURRENT_DOCKER_IMAGE_SIZE
+du -sh ${FILE_NAME}.tar.gz | cut -f1 | xargs >> CURRENT_DOCKER_IMAGE_SIZE
+