Try out a CircleCI configuration

.circleci/config.yml

+# Modeled on https://circleci.com/docs/2.0/language-haskell/
+version: 2.1
+jobs:
+  build:
+    docker:
+      - image: "fpco/stack-build:lts"
+    steps:
+      - "checkout"
+      - restore_cache:
+          # Read about caching dependencies: https://circleci.com/docs/2.0/caching/
+          name: "Restore Cached Dependencies"
+          keys:
+            - paymentserver-haskell-v1-{{ checksum "stack.yaml" }}-{{ checksum "PaymentServer.cabal" }}
+            - paymentserver-haskell-v1-{{ checksum "stack.yaml" }}
+      - run:
+          name: "Resolve/Update Dependencies"
+          command: "stack --no-terminal setup"
+      - run:
+          name: "Run tests"
+          command: "stack --no-terminal test --coverage"
+      - run:
+          name: "Install executable"
+          command: "stack --no-terminal install"
+      - save_cache:
+          name: "Cache Dependencies"
+          key: cci-demo-haskell-v1-{{ checksum "stack.yaml" }}-{{ checksum "PaymentServer.cabal" }}
+          paths:
+            - "/root/.stack"
+            - ".stack-work"
+      - store_artifacts:
+          # Upload executable
+          path: "~/.local/bin/PaymentServer-exe"
+          destination: "PaymentServer-exe"