Always run build stage on the host platform

fwcd · fwcd · commit 12aab55db3db · 2023-09-11T20:22:21.000+02:00
Since we're building JVM code, this shouldn't matter anyway.
diff --git a/Dockerfile b/Dockerfile
@@ -1,7 +1,7 @@
 # Running this container will start a language server that listens for TCP connections on port 49100
 # Every connection will be run in a forked child process
 
-FROM eclipse-temurin:11 AS builder
+FROM --platform=$BUILDPLATFORM eclipse-temurin:11 AS builder
 
 WORKDIR /src/kotlin-language-server
 
