Merge branch 'gitlab-ci-5' into 'master'

Remove CircleCI config

See merge request opensource/PrivateStorageio!62

.circleci/config.yml

-# Copyright 2019 PrivateStorage.io, LLC
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-#     http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-
-version: 2
-
-jobs:
-  test:
-    docker:
-      - image: "nixorg/nix:circleci"
-    steps:
-      - "checkout"
-
-      - run:
-          name: "Run Tests"
-          command: |
-            nix-shell --run 'nix-build nixos/unit-tests.nix' && cat result
-
-  system-tests-driver:
-    # Cannot actually run the system tests on CircleCI but we can build
-    # everything that makes them up.  This by itself can catch a lot of
-    # problems.
-    docker:
-      - image: "nixorg/nix:circleci"
-    steps:
-      - "checkout"
-
-      - restore_cache:
-          # Get all of Nix's state relating to the particular revision of
-          # nixpkgs we're using.  It will always be the same.  CircleCI
-          # artifacts and nixpkgs store objects are probably mostly hosted in
-          # the same place (S3) so there's not a lot of difference for
-          # anything that's pre-built.  For anything we end up building
-          # ourselves, though, this saves us all of the build time (less the
-          # download time).
-          #
-          # Read about caching dependencies: https://circleci.com/docs/2.0/caching/
-          name: "Restore Nix Store Paths"
-          keys:
-            # Construct cache keys that allow sharing as long as nixpkgs
-            # revision is unchanged.
-            #
-            # If nixpkgs changes then potentially a lot of cached packages for
-            # the base system will be invalidated so we may as well drop them
-            # and make a new cache with the new packages.
-            - privatestorageio-nix-store-v2-{{ checksum "nixpkgs.json" }}
-            - privatestorageio-nix-store-v2-
-
-      - run:
-          name: "Build System Test Driver"
-          command: |
-            nix-shell --run 'nix-build --max-jobs 1 --cores 1 nixos/system-tests.nix -A driver'
-
-          # Give it a good long while.  PaymentServer and its dependencies, in
-          # particular, can take a while to build.
-          no_output_timeout: "20m"
-
-      - save_cache:
-          name: "Cache Nix Store Paths"
-          key: privatestorageio-nix-store-v2-{{ checksum "nixpkgs.json" }}
-          paths:
-            - "/nix"
-
-  build:
-    docker:
-      - image: "nixorg/nix:circleci"
-    steps:
-      - "checkout"
-
-      - restore_cache:
-          # See comments for nix store caching in `build` job.
-          name: "Restore Nix Store Paths"
-          keys:
-            - privatestorageio-docs-nix-store-v1-{{ checksum "nixpkgs.json" }}
-            - privatestorageio-docs-nix-store-v1-
-
-      - run:
-          name: "Nix Build"
-          command: |
-            nix-shell --run 'nix-build docs.nix'
-
-      - save_cache:
-          name: "Cache Nix Store Paths"
-          key: privatestorageio-docs-nix-store-v1-{{ checksum "nixpkgs.json" }}
-          paths:
-            - "/nix"
-
-      - store_artifacts:
-          path: "result/docs"
-          destination: "docs"
-
-workflows:
-  version: 2
-  everything:
-    jobs:
-      - "test"
-      - "build"