add firebase-tools (firebase cli) (#256)

* add firebase-tools (firebase cli)

It's required for using Firebase App Distribution.
https://firebase.google.com/products/app-distribution

* add note about firebase tools to changelog

CHANGELOG.md

@@ -2,6 +2,7 @@
 ## `v2019_08_11_1`
 
 * new preinstalled packages:
+    * `firebase-tools-7.4.0`: https://github.com/bitrise-io/android/pull/256
     * `build-tools-29.0.2`
     * `build-tools-29.0.1`
  https://github.com/bitrise-docker/android/pull/246

Dockerfile

@@ -152,6 +152,15 @@ RUN /usr/bin/gcloud config set --installation component_manager/disable_update_c
  && /usr/bin/gcloud config set --installation core/disable_usage_reporting true \
  && sed -i -- 's/\"disable_usage_reporting\": false/\"disable_usage_reporting\": true/g' $GCLOUD_SDK_CONFIG
 
+# ------------------------------------------------------
+# --- Install Firebase Tools (Firebase CLI)
+# https://github.com/firebase/firebase-tools
+#
+# It's required for using Firebase App Distribution.
+#  https://firebase.google.com/products/app-distribution
+#
+
+RUN npm install -g firebase-tools
 
 # ------------------------------------------------------
 # --- Install additional packages

system_report.sh

@@ -43,6 +43,16 @@ fi
 echo "========================================"
 echo
 
+echo
+echo "=== Firebase Tools components =========="
+if [[ ! -z "$BITRISE_DOCKER_REV_NUMBER_ANDROID_NDK_LTS" ]] ; then
+    echo " (!) Not pre-installed on this Stack / in this image"
+else
+    firebase --version
+fi
+echo "========================================"
+echo
+
 echo
 echo "=== Google Cloud Network Check ========="
 if [[ ! -z "$BITRISE_DOCKER_REV_NUMBER_ANDROID_NDK_LTS" ]] ; then