make downloading and installing quieter

docker/package_managers/download_pkgs.bzl

@@ -27,31 +27,29 @@ def _generate_add_additional_repo_commands(ctx, additional_repos):
 
 def _generate_download_commands(ctx, packages, additional_repos):
     return """#!/usr/bin/env bash
-set -ex
+set -e
 {add_additional_repo_commands}
 # Remove /var/lib/apt/lists/* in the base image. apt-get update -y command will create them.
 rm -rf /var/lib/apt/lists/*
 # Fetch Index
-apt-get update -y
+apt-get update -y -qq
 # Make partial dir
 mkdir -p /tmp/install/./partial
 # Install command
-apt-get install --no-install-recommends -y -q -o Dir::Cache="/tmp/install" -o Dir::Cache::archives="." {packages} --download-only
+apt-get install --no-install-recommends -y -qq -o Dir::Cache="/tmp/install" -o Dir::Cache::archives="." {packages} --download-only
 
 items=$(ls /tmp/install/*.deb)
-if [ $items = "" ]; then
+if [ -z "$items" ]; then
     echo "Did not find the .deb files for debian packages {packages} in /tmp/install. Did apt-get actually succeed?" && false
 fi
 # Generate csv listing the name & versions of the debian packages.
 # Example contents of a metadata CSV with debian packages gcc 8.1 & clang 9.1:
 # Name,Version
 # gcc,7.1
 # clang,9.1
-echo "Generating metadata CSV file {installables}_metadata.csv"
 echo Name,Version > {installables}_metadata.csv
 dpkg_deb_path=$(which dpkg-deb)
 for item in $items; do
-    echo "Adding information about $item to metadata CSV"
     pkg_name=$($dpkg_deb_path -f $item Package)
     if [ $pkg_name = "" ]; then
         echo "Failed to get name of the package for $item" && false
@@ -60,7 +58,6 @@ for item in $items; do
     if [ $pkg_version = "" ]; then
         echo "Failed to get the version of the package for $item" && false
     fi
-    echo "Package $pkg_name, Version $pkg_version"
     echo -n "$pkg_name," >> {installables}_metadata.csv
     echo $pkg_version >> {installables}_metadata.csv
 done;

docker/package_managers/installer.sh.tpl

@@ -2,7 +2,7 @@
 # This script installs debs in installables.tar through dpkg and apt-get.
 # It expects to be volume-mounted inside a docker image, in /tmp/pkginstall
 # along with the installables.tar.
-set -ex
+set -e
 pushd /tmp/pkginstall
 %{install_commands}
 popd

docker/package_managers/run_download.sh.tpl

@@ -1,5 +1,5 @@
 #!/usr/bin/env bash
-set -ex
+set -e
 
 function guess_runfiles() {
     if [ -d ${BASH_SOURCE[0]}.runfiles ]; then

docker/package_managers/run_install.sh.tpl

@@ -1,5 +1,5 @@
 #!/usr/bin/env bash
-set -ex
+set -e
 
 # Resolve the docker tool path
 DOCKER="%{docker_tool_path}"

docker/util/commit_layer.sh.tpl

@@ -1,6 +1,6 @@
 #!/usr/bin/env bash
 
-set -ex
+set -e
 
 # Load utils
 source %{util_script}

docker/util/extract.sh.tpl

@@ -1,6 +1,6 @@
 #!/usr/bin/env bash
 
-set -ex
+set -e
 
 # Resolve the docker tool path
 DOCKER="%{docker_tool_path}"