docker: add protoc to docker image

Author: jamaljsr

Dockerfile

@@ -11,6 +11,7 @@ ENV GODEBUG netdns=cgo
 ENV GO111MODULE on
 
 ENV NODE_VERSION=v12.17.0
+ENV PROTOC_VERSION=3.12.4
 
 # Install dependencies and install/build lightning-terminal.
 RUN apk add --no-cache --update alpine-sdk \
@@ -20,11 +21,14 @@ RUN apk add --no-cache --update alpine-sdk \
     bash \
     binutils \
     tar \
+    protobuf \
 && touch ~/.bashrc \
 && curl -sfSLO https://unofficial-builds.nodejs.org/download/release/${NODE_VERSION}/node-${NODE_VERSION}-linux-x64-musl.tar.xz \
 && tar -xf node-${NODE_VERSION}-linux-x64-musl.tar.xz -C /usr --strip 1 \
 && rm node-${NODE_VERSION}-linux-x64-musl.tar.xz \
 && curl -o- -L https://yarnpkg.com/install.sh | bash \
+&& curl -sfSLO https://github.com/protocolbuffers/protobuf/releases/download/v${PROTOC_VERSION}/protoc-${PROTOC_VERSION}-linux-x86_64.zip \
+&& unzip protoc-${PROTOC_VERSION}-linux-x86_64.zip include/* -d /usr/local/ \
 && /bin/bash \
 && . ~/.bashrc \
 &&  cd /go/src/github.com/lightninglabs/lightning-terminal \

app/scripts/build-protos.js

@@ -30,6 +30,7 @@ const generate = async () => {
   const protocCmd = [
     'protoc',
     `--plugin=protoc-gen-ts=${protocGen}`,
+    '--proto_path=/usr/local/include',
     '--proto_path=../proto',
     '--js_out=import_style=commonjs,binary:./src/types/generated',
     '--ts_out=service=grpc-web:./src/types/generated',
@@ -82,6 +83,7 @@ const main = async () => {
     await patch();
   } catch (error) {
     console.error(error);
+    process.exit(1);
   }
 };