Add template for docker-compose config disclosure (#837)

exposures/configs/docker-compose-config.yml

@@ -0,0 +1,22 @@
+id: docker-compose-config
+
+info:
+  name: docker-compose.yml exposure
+  author: meme-lord & blckraven
+  severity: medium
+
+requests:
+  - method: GET
+    redirects: true
+    max-redirects: 3
+    path:
+      - "{{BaseURL}}/docker-compose.yml"
+    matchers-condition: and
+    matchers:
+      - type: dsl
+        dsl:
+          - 'regex("^version: ", body) && contains(body, "services:") == true'
+
+      - type: status
+        status:
+          - 200