[oss-fuzz] update Dockerfile to point to updated Docker image
am: cb2de5a810

Change-Id: Ibe0d2b123dc6c5f3d313ef5af8e048fba8bbb0bc
diff --git a/fuzz/Dockerfile b/fuzz/Dockerfile
index 69e2878..db3e560 100644
--- a/fuzz/Dockerfile
+++ b/fuzz/Dockerfile
@@ -1,11 +1,13 @@
-# Copyright 2016 The Chromium Authors. All rights reserved.
+# Copyright 2017 The Chromium Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 #
 # Defines a docker image that can build fuzzers.
 #
-FROM ossfuzz/base-libfuzzer
-RUN apt-get install -y make libssl-dev binutils libgcc-5-dev
+FROM gcr.io/oss-fuzz-base/base-builder
+RUN apt-get update && apt-get install -y make libssl-dev binutils libgcc-5-dev
 
 COPY . /src/tpm2/
 COPY fuzz/build.sh /src/
+
+WORKDIR tpm2
diff --git a/fuzz/README b/fuzz/README
index 4c0cc04..90fd5f6 100644
--- a/fuzz/README
+++ b/fuzz/README
@@ -32,6 +32,12 @@
 
     $ docker run -ti --rm -v $(pwd):/src/tpm2 -v /tmp/fuzzers:/out \
                  ossfuzz/tpm2
+    or
+
+    $ docker run -ti --rm -v $(pwd):/src/tpm2 -v /tmp/fuzzers:/out \
+                -e FUZZING_ENGINE=libfuzzer \
+                -e SANITIZER=<address/memory/undefined> \
+                ossfuzz/tpm2
 
   Get a shell in the container