chore: Add auto-changelog scripts and Docker stuff.

.auto-changelog

@@ -0,0 +1,9 @@
+{
+  "output": "CHANGELOG.md",
+  "template": "keepachangelog",
+  "unreleased": true,
+  "commitLimit": false,
+  "hideCredit": true,
+  "sortCommits": "date-desc",
+  "breakingPattern": "BREAKING CHANGE: yes"
+}

composer.json

@@ -40,5 +40,10 @@
             "phpstan/extension-installer": true,
             "phpro/grumphp": true
         }
+    },
+    "scripts": {
+        "changelog-unreleased": "docker-compose run auto_changelog -c .auto-changelog -u",
+        "changelog-version": "docker-compose run auto_changelog -c .auto-changelog -v",
+        "grumphp": "./vendor/bin/grumphp run"
     }
 }

docker-compose.yaml

@@ -0,0 +1,8 @@
+version: "3"
+
+services:
+    auto_changelog:
+        build: docker/auto-changelog
+        working_dir: /src
+        volumes:
+            - .:/src

docker/auto-changelog/Dockerfile

@@ -0,0 +1,13 @@
+FROM node:15.4.0-alpine
+
+ENV SRC_PATH /src
+
+RUN apk add --no-cache git
+RUN npm install -g auto-changelog@2.2.1
+RUN mkdir -p $SRC_PATH
+
+VOLUME [ "$SRC_PATH" ]
+WORKDIR $SRC_PATH
+
+CMD ["--help"]
+ENTRYPOINT ["auto-changelog"]