ci: include backend integration tests

Dockerfile

@@ -3,16 +3,10 @@ FROM registry.gitlab.com/openstapps/projectmanagement/node:v18 as workspace
 USER root
 RUN apk add --update python3 py3-pip make g++ gcompat
 
-WORKDIR app/
-COPY pnpm-lock.yaml \
-     package.json \
-     pnpm-workspace.yaml ./
+WORKDIR /build
+COPY pnpm-lock.yaml ./
 RUN pnpm fetch --prod
 
-COPY backend/ backend/
-COPY configuration/ configuration/
-COPY examples/ examples/
-COPY frontend/ frontend/
-COPY packages/ packages/
+ADD . ./
 
 RUN pnpm install -r --offline --prod