Just exit container when PATH is mismatched

.github/workflows/build-multiarch.yml

@@ -94,6 +94,7 @@ jobs:
           tags: ${{ env.IMAGE_TO_TEST }}
           # ensure latest base image is used
           pull: true
+          # load into daemon for test usage in next step
           load: true
           push: false
           build-args: |

scripts/start-configuration

@@ -66,9 +66,12 @@ if [[ $RCON_PASSWORD_FILE ]]; then
     log ""
 fi
 
+# Some Docker management UIs grab all the image declared variables and present them for configuration.
+# When upgrading images across Java versions, that creates a mismatch in PATH's expected by base image.
 if ! which java > /dev/null; then
-  log "Fixing PATH to include java"
-  PATH="${PATH}:/opt/java/openjdk/bin"
+  log "ERROR: PATH should not be explicitly passed into the container"
+  log "       Remove configuration of that variable."
+  exit 1
 fi
 
 export VERSIONS_JSON=https://launchermeta.mojang.com/mc/game/version_manifest.json