Swift: Preserve build path between build and run stages (#733)

* Preserve build path between build and run stages

Avoids swift `#file` paths being invalid when used to look up relative paths to resources.

* Update README.md

* Update stack.yaml

Co-authored-by: Helen Masters <helen_postlethwaite@uk.ibm.com>
Co-authored-by: Kamran Shamsi <45264227+Kamran64@users.noreply.github.com>

Author: 3 people

incubator/swift/image/project/Dockerfile

@@ -8,7 +8,7 @@ RUN apt-get update \
  && echo 'Finished installing dependencies'
 
 # Install user-app dependencies
-WORKDIR "/project/user-app"
+WORKDIR "/project"
 COPY ./user-app ./
 
 # Build project, and discover executable name
@@ -25,8 +25,8 @@ RUN apt-get update \
  && echo 'Finished installing dependencies'
 
 WORKDIR "/project"
-COPY --from=builder /project/user-app/.build /project/.build
-COPY --from=builder /project/user-app/run.sh /project
+COPY --from=builder /project/.build /project/.build
+COPY --from=builder /project/run.sh /project
 
 ENV PORT 8080
 EXPOSE 8080

incubator/swift/stack.yaml

@@ -1,5 +1,5 @@
 name: Swift
-version: 0.2.5
+version: 0.2.6
 description: Appsody runtime for Swift applications
 license: Apache-2.0
 language: swift