Enable nodemon when using test:env

This avoids the need to rebuild the environment when making code changes
and running integration tests

Change-type: minor

Dockerfile.template

@@ -127,6 +127,7 @@ COPY --from=build-base /usr/src/app/node_modules ./node_modules
 #dev-cmd-live=LIVEPUSH=1 ./entry.sh
 
 # Copy build files
+COPY entry.sh .
 COPY build-utils ./build-utils
 COPY webpack.config.js tsconfig.json tsconfig.release.json tsconfig.js.json .mochapodrc.yml ./
 COPY typings ./typings

docker-compose.dev.yml

@@ -1,6 +1,17 @@
 version: '2.3'
 
 services:
+  balena-supervisor-sut:
+    build:
+      context: ./
+      dockerfile: Dockerfile.template
+      target: test
+      args:
+        ARCH: ${ARCH:-amd64}
+    environment:
+      LIVEPUSH: '1'
+    volumes:
+      - './src:/usr/src/app/src'
   sut:
     command: sleep infinity
     volumes: