update go version in Dockerfile to 1.8
diff --git a/templates/tools/dockerfile/interoptest/grpc_interop_go/Dockerfile.template b/templates/tools/dockerfile/interoptest/grpc_interop_go/Dockerfile.template
index 38a5ca7..bf025d8 100644
--- a/templates/tools/dockerfile/interoptest/grpc_interop_go/Dockerfile.template
+++ b/templates/tools/dockerfile/interoptest/grpc_interop_go/Dockerfile.template
@@ -29,7 +29,7 @@
# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- FROM golang:1.5
+ FROM golang:latest
<%include file="../../go_path.include"/>
<%include file="../../python_deps.include"/>
diff --git a/templates/tools/dockerfile/interoptest/grpc_interop_http2/Dockerfile.template b/templates/tools/dockerfile/interoptest/grpc_interop_http2/Dockerfile.template
index 6204c3e..0899e00 100644
--- a/templates/tools/dockerfile/interoptest/grpc_interop_http2/Dockerfile.template
+++ b/templates/tools/dockerfile/interoptest/grpc_interop_http2/Dockerfile.template
@@ -29,7 +29,7 @@
# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- FROM golang:1.5
+ FROM golang:latest
<%include file="../../go_path.include"/>
<%include file="../../python_deps.include"/>
diff --git a/templates/tools/dockerfile/stress_test/grpc_interop_stress_go/Dockerfile.template b/templates/tools/dockerfile/stress_test/grpc_interop_stress_go/Dockerfile.template
index e02254c..ad8ad71 100644
--- a/templates/tools/dockerfile/stress_test/grpc_interop_stress_go/Dockerfile.template
+++ b/templates/tools/dockerfile/stress_test/grpc_interop_stress_go/Dockerfile.template
@@ -29,7 +29,7 @@
# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- FROM golang:1.5
+ FROM golang:latest
<%include file="../../gcp_api_libraries.include"/>
<%include file="../../python_deps.include"/>
diff --git a/tools/dockerfile/interoptest/grpc_interop_go/Dockerfile b/tools/dockerfile/interoptest/grpc_interop_go/Dockerfile
index d3bf071..d7a0b17 100644
--- a/tools/dockerfile/interoptest/grpc_interop_go/Dockerfile
+++ b/tools/dockerfile/interoptest/grpc_interop_go/Dockerfile
@@ -27,7 +27,7 @@
# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-FROM golang:1.5
+FROM golang:latest
# Using login shell removes Go from path, so we add it.
RUN ln -s /usr/local/go/bin/go /usr/local/bin
diff --git a/tools/dockerfile/interoptest/grpc_interop_http2/Dockerfile b/tools/dockerfile/interoptest/grpc_interop_http2/Dockerfile
index 66d9b4f..42e9edf 100644
--- a/tools/dockerfile/interoptest/grpc_interop_http2/Dockerfile
+++ b/tools/dockerfile/interoptest/grpc_interop_http2/Dockerfile
@@ -27,7 +27,7 @@
# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-FROM golang:1.5
+FROM golang:latest
# Using login shell removes Go from path, so we add it.
RUN ln -s /usr/local/go/bin/go /usr/local/bin
diff --git a/tools/dockerfile/stress_test/grpc_interop_stress_go/Dockerfile b/tools/dockerfile/stress_test/grpc_interop_stress_go/Dockerfile
index bbf7de7..c099f33 100644
--- a/tools/dockerfile/stress_test/grpc_interop_stress_go/Dockerfile
+++ b/tools/dockerfile/stress_test/grpc_interop_stress_go/Dockerfile
@@ -27,7 +27,7 @@
# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-FROM golang:1.5
+FROM golang:latest
# Google Cloud platform API libraries
RUN apt-get update && apt-get install -y python-pip && apt-get clean