remove network mode host, add health check to postgres startup

Dockerfile.dev

@@ -13,4 +13,6 @@ COPY LICENSE.md .
 
 RUN go build -o /leapchat
 
+EXPOSE 8080
+
 CMD ["/leapchat"]

Dockerfile.frontend.dev

@@ -12,6 +12,4 @@ COPY webpack* .
 COPY .env .
 COPY .babelrc .
 
-EXPOSE 5001
-
 CMD ["npm", "run", "dev"]

docker-compose.yml

@@ -1,4 +1,4 @@
-version: '3.1'
+version: '3.4'
 
 services:
     frontend:
@@ -7,34 +7,35 @@ services:
             dockerfile: ./Dockerfile.frontend.dev
         ports:
             - 5001:5001
-        network_mode: "host"
     chatserver:
         build:
             context: .
             dockerfile: ./Dockerfile.dev
         ports:
             - 8080:8080
-        network_mode: "host"
         depends_on:
             - postgrest
     postgres:
         image: postgres:latest
         ports:
             - 5432:5433
-        network_mode: "host"
         environment:
             - POSTGRES_PASSWORD=superuser
             - POSTGRES_USER=superuser
             - POSTGRES_DB=leapchat
         volumes:
             - ./_docker-volumes/postgres:/var/lib/postgresql/data
             #- ./db:/docker-entrypoint-initdb.d/
+        healthcheck:
+            test: ["CMD-SHELL", "pg_isready"]
+            interval: 5s
+            timeout: 60s
+            retries: 10
     postgrest:
         command: postgrest /app/postgrest.conf
         image: postgrest/postgrest:latest
         ports:
             - 3000:3000
-        network_mode: "host"
         environment:
             PGUSER: superuser
             PGPASSWORD: superuser
@@ -46,4 +47,5 @@ services:
         volumes:
             - ./db/:/app
         depends_on:
-            - postgres
+            postgres:
+                condition: service_healthy