Stop using gradlew in gitlab-ci, collapse proto codegen into a single job, add pipeline cacheing

These changes all make the pipeline run much faster for incremental builds.

.gitlab-ci.yml

@@ -3,51 +3,40 @@ stages:
   - build
   - deploy
 
-protoc_base:
+cache:
+  key: ${CI_COMMIT_REF_SLUG}
+  paths:
+    - "**/Package.resolved"
+    - "**/.build/"
+    - .gradle/
+
+protoc_gen:
   image: vato.ddns.net:8083/gradle
   stage: protoc
   rules:
     - changes:
-      - protobuf/*
-  script: 
-    - ./gradlew :protobuf:generateProto
-
-protoc_python:
-  extends: protoc_base
-  rules:
-    - changes:
-      - pycar/*
-      - protobuf/*
+        - protobuf/*
+  artifacts:
+    paths:
+      - "./**/*pb2*"
+      - "./SwiftyCar/Sources/**/*.pb.swift"
+      - "./SwiftyCar/Sources/**/*.grpc.swift"      
+      - "./CarControlleriOS/Sources/**/*.pb.swift"
+      - "./CarControlleriOS/Sources/**/*.grpc.swift"
+    expire_in: 30 days
   script:
-    - ./gradlew :pycar:copyPythonCode
-
-protoc_swift_Car:
-  extends: protoc_base
-  rules:
-    - changes:
-      - SwiftyCar/*
-      - protobuf/*
-  script:
-    - ./gradlew :SwiftyCar:copySwiftCode
-
-protoc_swift_CarController:
-  extends: protoc_base
-  rules:
-    - changes:
-      - CarControlleriOS/*
-      - protobuf/*
-  script:
-    - ./gradlew :CarControlleriOS:copySwiftCode
+    - gradle :pycar:copyPythonCode
+    - gradle :SwiftyCar:copySwiftCode
+    - gradle :CarControlleriOS:copySwiftCode
 
 build_pycar:
   image: vato.ddns.net:8083/python-infra:buster
   stage: build
   rules:
     - changes:
-      - pycar/*
-      - protobuf/*
-  needs: 
-    - protoc_python
+        - pycar/*
+  needs:
+    - protoc_gen
   script:
     - cd pycar && python setup.py bdist_wheel && cd ..
 
@@ -56,20 +45,31 @@ build_pycar_docker:
   stage: build
   rules:
     - changes:
-      - pycar/*
-      - protobuf/*
+        - pycar/*
   needs:
-    - protoc_python
+    - protoc_gen
   script:
     - echo ${DOCKER_PASSWORD} | docker login vato.ddns.net:8083 --username ${DOCKER_USERNAME} --password-stdin
     - docker build -f pycar/Dockerfile --build-arg PYPI_USERNAME=${PYPI_USERNAME} --build-arg PYPI_PASSWORD=${PYPI_PASSWORD} -t vato.ddns.net:8082/pycar:latest pycar
 
+built_swift_car:
+  image: vato.ddns.net:8083/swift
+  stage: build
+  rules:
+    - changes:
+        - SwiftyCar/*
+        - protobuf/*
+  needs:
+    - protoc_gen
+  script:
+    - cd SwiftyCar && swift build
+
 build_esp32:
   image: vato.ddns.net:8083/shaguarger/platformio
   stage: build
   rules:
     - changes:
-      - esp32/*
+        - esp32/*
   script:
     - platformio ci --project-conf esp32/platformio.ini esp32