Pin dependencies in docker file. (#97466)

* Pin dependencies in docker file.

The docker file had two dependencies that were not locked. An npm
dependency and the debian base image. This PR pins those two
dependencies.

* Use the slim version of debian image.

* Use image with bigger disk to build docker images.

* remove web_engine_tests from cirrus.

.cirrus.yml

@@ -18,7 +18,7 @@ gcp_credentials: ENCRYPTED[!cc769765170bebc37e0556e2da5915ca64ee37f4ec8c966ec147
 task:
   gke_container:
     dockerfile: "dev/ci/docker_linux/Dockerfile"
-    builder_image_name: docker-builder # gce vm image
+    builder_image_name: docker-builder-linux # gce vm image
     builder_image_project: flutter-cirrus
     cluster_name: test-cluster
     zone: us-central1-a
@@ -156,21 +156,3 @@ task:
         - git fetch origin master:master
         # The actual logic is in a shell script so that it can be shared between CIs.
         - (cd dev/customer_testing/; ./ci.sh)
-
-    - name: web_smoke_test
-      only_if: "changesInclude('.cirrus.yml', 'examples/hello_world/**' ,'dev/**', 'packages/flutter/**', 'packages/flutter_test/**', 'packages/flutter_tools/lib/src/test/**', 'packages/flutter_web_plugins/**', 'bin/**') && $CIRRUS_PR != ''"
-      environment:
-        # Tests Hello World with Flutter Web Engine using Flutter Driver. Should not need more resources.
-        CPU: 2
-        MEMORY: 2G
-        CHROME_NO_SANDBOX: true
-      script:
-        - flutter config --enable-web
-        - git clone https://github.com/flutter/web_installers.git
-        - cd web_installers/packages/web_drivers/
-        - dart __deprecated_pub get
-        - dart lib/web_driver_installer.dart chromedriver --install-only
-        - chromedriver/chromedriver --port=4444 &
-        - sleep 1
-        - cd ../../../examples/hello_world/
-        - flutter drive --target=test_driver/smoke_web_engine.dart -d web-server --profile --browser-name=chrome

dev/ci/docker_linux/Dockerfile

@@ -12,7 +12,7 @@
 
 # Last manual update 2021-09-24 (changing this comment will re-build image)
 
-FROM debian:bullseye
+FROM debian@sha256:4c25ffa6ef572cf0d57da8c634769a08ae94529f7de5be5587ec8ce7b9b50f9c
 MAINTAINER Flutter Developers <flutter-dev@googlegroups.com>
 
 RUN apt-get update -y && \
@@ -101,7 +101,7 @@ ENV PATH="/usr/bin:${PATH}"
 RUN dpkg-query -L nodejs
 # Install Firebase
 # This is why we need nodejs installed.
-RUN /usr/bin/npm --verbose install -g firebase-tools
+RUN /usr/bin/npm --verbose install -g firebase-tools@10.1.2
 
 # Install golang more recent than in repo (necessary for dashing to build)
 RUN curl 'https://dl.google.com/go/go1.13.3.linux-amd64.tar.gz' | tar xvz