working backend on docker (#226)

* working backend on docker

refactor of the dockerfiles to be more readable and independent.
full build of the backend (release only) within docker

* read `PORT` to u16

* Only need one `PORT` in the new backend

Co-authored-by: Maciej Hirsz <1096222+maciejhirsz@users.noreply.github.com>

backend.Dockerfile

@@ -0,0 +1,11 @@
+FROM rust
+
+WORKDIR /app
+
+COPY ./backend .
+
+RUN cargo build --release
+
+EXPOSE 8000
+
+ENTRYPOINT [ "./target/release/telemetry" ]

backend/src/main.rs

@@ -86,7 +86,9 @@ fn main() -> std::io::Result<()> {
     let aggregator = Aggregator::new().start();
     let factory = LocatorFactory::new();
     let locator = SyncArbiter::start(4, move || factory.create());
-
+    
+    let port = std::env::var("PORT").ok().and_then(|v| v.parse().ok()).unwrap_or(8000u16);
+    
     HttpServer::new(move || {
         App::new()
             .data(aggregator.clone())
@@ -98,7 +100,7 @@ fn main() -> std::io::Result<()> {
             .service(resource("/network_state/{chain}/{nid}").route(get().to_async(state_route)))
             .service(resource("/network_state/{chain}/{nid}/").route(get().to_async(state_route)))
     })
-    .bind("0.0.0.0:8000")?
+    .bind(format!("0.0.0.0:{}", port))?
     .start();
 
     sys.run()

docker-compose.yml

@@ -3,9 +3,9 @@ version: "3"
 services:
   telemetry-frontend:
     build:
-      dockerfile: Dockerfile
+      dockerfile: frontend.Dockerfile
       context: ./
-    # Copy in changes to the ui, so no need to rebulld the images.
+    # Copy in changes to the ui, so no need to rebuild the images.
     volumes:
       - /app/node_modules
       - ./packages:/app/packages
@@ -14,12 +14,9 @@ services:
       - 3000:3000
   telemetry-backend:
     build:
-      dockerfile: Dockerfile
+      dockerfile: backend.Dockerfile
       context: ./
-    command: yarn start:backend
     environment:
-      - TELEMETRY_SERVER=1024
-      - FEED_SERVER=8080
+      - PORT=8000
     ports:
-      - 8080:8080
-      - 1024:1024
+      - 8000:8000

frontend.Dockerfile

@@ -5,13 +5,7 @@ WORKDIR /app
 RUN apk add --no-cache python make g++
 
 COPY ./scripts ./scripts
-COPY ./backend ./backend
 COPY ./packages ./packages
 COPY ./package.json ./yarn.lock ./tsconfig.json ./
 
 RUN yarn 
-
-
-# Frontend is exposing 3000
-# Backend is exposing 8080
-# No need for expose, if using docker-compose & docker run -p 3000:3000