Add release selection for the GitHub-released server types (#4339)

tests/setuponlytests/crucible-release/docker-compose.yml

@@ -0,0 +1,12 @@
+services:
+  mc:
+    restart: "no"
+    image: ${IMAGE_TO_TEST:-itzg/minecraft-server}
+    environment:
+      EULA: "TRUE"
+      SETUP_ONLY: "TRUE"
+      TYPE: CRUCIBLE
+      VERSION: "1.7.10"
+      CRUCIBLE_RELEASE: "v5.3"
+    volumes:
+      - ./data:/data

tests/setuponlytests/crucible-release/verify.sh

@@ -0,0 +1,6 @@
+mc-image-helper assert fileExists "/data/Crucible-1.7.10-5.3.jar"
+
+if [ ! -d /data/libraries ]; then
+  echo "Expected /data/libraries to have been extracted from libraries.zip"
+  exit 1
+fi