use nightly TinyGo: WASI supported version

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

Author: mathetake

.github/workflows/workflow.yaml

@@ -26,18 +26,13 @@ jobs:
     name: build examples
     runs-on: ubuntu-latest
     container:
-      image: tinygo/tinygo:0.15.0
+      image: getenvoy/extension-tinygo-builder:latest
     steps:
       - name: checkout
         uses: actions/checkout@v2
 
-      - name: set up go 1.15
-        uses: actions/setup-go@v1
-        with:
-          go-version: 1.15
-
       - name: build examples
-        run: find ./examples -type f -name "main.go" | xargs -Ip tinygo build -o p.wasm -target=wasm -wasm-abi=generic p
+        run: make build.examples
 
       - name: upload wasm-binaries
         uses: actions/upload-artifact@v2

Makefile

@@ -10,7 +10,7 @@ build.example:
 	tinygo build -o ./examples/${name}/main.go.wasm -target=wasm -wasm-abi=generic ./examples/${name}/main.go
 
 build.examples:
-	find ./examples -type f -name "main.go" | xargs -Ip tinygo build -o p.wasm -target=wasm -wasm-abi=generic p
+	find ./examples -type f -name "main.go" | xargs -Ip tinygo build -o p.wasm -target=wasi -wasm-abi=generic p
 
 lint:
 	golangci-lint run --build-tags proxytest

README.md

@@ -38,7 +38,21 @@ func (ctx *context) OnHttpRequestHeaders(int, bool) types.Action {
 
 ### requirements
 
-- TinyGo(0.15.0+): https://tinygo.org
+proxy-wasm-go-sdk depends on the latest TinyGo which supports WASI target([tinygo-org/tinygo#1373](https://github.com/tinygo-org/tinygo/pull/1373)).
+In order to install that, simply run (Ubuntu/Debian):
+
+```shell
+# this corresponds to https://github.com/tinygo-org/tinygo/commit/f50ad3585d084b17f7754f4b3cb0d42661fee036
+wget https://19227-136505169-gh.circle-artifacts.com/0/tmp/tinygo_amd64.deb
+dpkg -i tinygo_amd64.deb
+```
+
+Alternatively, you can use the pre-built docker container `getenvoy/extention-tingyo-builder:wasi-dev` for any platform.
+
+TinyGo's official release of WASI target will be soon, and after that you could
+ just follow https://tinygo.org/getting-started/ to install the requirement. Stay tuned!
+
+
 
 ### compatible Envoy builds