1 files changed, 93 insertions, 0 deletions
diff --git a/packages/microsoft.dotnet.buildtools/2.1.0-rc1-03006-01/lib/scripts/docker/init-docker.sh b/packages/microsoft.dotnet.buildtools/2.1.0-rc1-03006-01/lib/scripts/docker/init-docker.sh
new file mode 100755
index 0000000000..af0d2c5ddd
--- /dev/null
+++ b/packages/microsoft.dotnet.buildtools/2.1.0-rc1-03006-01/lib/scripts/docker/init-docker.sh
@@ -0,0 +1,93 @@
+#!/usr/bin/env bash
+
+# Stop script on NZEC
+set -e
+# Stop script if unbound variable found (use ${var:-} if intentional)
+set -u
+
+say_err() {
+    printf "%b\n" "Error: $1" >&2
+}
+
+showHelp() {
+    echo "Usage: $scriptName [OPTIONS] [IMAGE_NAME[:TAG|@DIGEST]]"
+    echo
+    echo "Initializes Docker by:"
+    echo "  - Emitting the version of Docker that is being used"
+    echo "  - Removing all containers and images that exist on the machine"
+    echo "  - Ensuring the latest copy of the specified image exists on the machine"
+    echo
+    echo "Options:"
+    echo "  -r, --retryCount    Number of times to retry pulling image on error"
+    echo "  -w, --waitFactor    Time (seconds) to wait between pulls (time is multiplied each iteration)"
+}
+
+# Executes a command and retries if it fails.
+execute() {
+    local count=0
+    until "$@"; do
+        local exit=$?
+        count=$(( $count + 1 ))
+        if [ $count -lt $retries ]; then
+            local wait=$(( waitFactor ** (( count - 1 )) ))
+            echo "Retry $count/$retries exited $exit, retrying in $wait seconds..."
+            sleep $wait
+        else    
+            say_err "Retry $count/$retries exited $exit, no more retries left."
+            return $exit
+        fi
+    done
+
+    return 0
+}
+
+scriptName=$0
+retries=5
+waitFactor=6
+image=
+
+while [ $# -ne 0 ]; do
+    name=$1
+    case $name in
+        -h|--help)
+            showHelp
+            exit 0
+            ;;
+        -r|--retryCount)
+            shift
+            retries=$1
+            ;;
+        -w|--waitFactor)
+            shift
+            waitFactor=$1
+            ;;
+        -*)
+            say_err "Unknown option: $1"
+            exit 1
+            ;;
+        *)
+            if [ ! -z "$image" ]; then
+                say_err "Unknown argument: \`$name\`"
+                exit 1
+            fi
+
+            image="$1"
+            ;;
+    esac
+
+    shift
+done
+
+# Capture Docker version for diagnostic purposes
+docker --version
+echo
+
+echo "Cleaning Docker Artifacts"
+sourceDir="$( cd "$( dirname "${BASH_SOURCE[0]}" )" && pwd )"
+"$sourceDir/cleanup-docker.sh"
+echo
+
+if [ ! -z "$image" ]; then
+    echo "Pulling Docker image $image"
+    execute docker pull $image
+fi