add builder image for TinyGo

Signed-off-by: mathetake <[email protected]>

Author: mathetake

Makefile

@@ -15,7 +15,7 @@
 ENVOY = standard:1.11.1
 HUB ?= docker.io/getenvoy
 GETENVOY_TAG ?= dev
-BUILDERS_LANGS := rust
+BUILDERS_LANGS := rust tinygo
 BUILDERS_TAG ?= latest
 EXTRA_TAG ?=
 

images/extension-builders/tinygo/Dockerfile

@@ -0,0 +1,30 @@
+# Copyright 2020 Tetrate
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+#
+# Builder image for Envoy Wasm extensions written in Go.
+#
+
+FROM golang:1.15
+
+ENV TINYGO_VERSION=0.15.0
+
+RUN wget https://github.com/tinygo-org/tinygo/releases/download/v${TINYGO_VERSION}/tinygo_${TINYGO_VERSION}_amd64.deb
+RUN dpkg -i tinygo_${TINYGO_VERSION}_amd64.deb && rm tinygo_${TINYGO_VERSION}_amd64.deb
+
+ENV TINYGO_SDK_NAME=github.com/tetratelabs/proxy-wasm-go-sdk
+ENV TINYGO_SDK_VERSION=v0.0.1
+ENV TINYGO_SDK_PATH=${GOPATH}/src/${TINYGO_SDK_NAME}
+
+RUN mkdir -p ${TINYGO_SDK_PATH} && git clone https://${TINYGO_SDK_NAME} -b ${TINYGO_SDK_VERSION} ${TINYGO_SDK_PATH}