Replace apk with apt

Dockerfile

@@ -1,14 +1,14 @@
-FROM --platform=$BUILDPLATFORM openjdk:21-jre-alpine AS builder
+FROM --platform=$BUILDPLATFORM openjdk:22-ea-21-jdk-slim-bullseye AS builder
 
-RUN apk update && apk add gradle git && rm -rf /var/lib/apk/* /var/cache/apk/*
+RUN apt update && apt install gradle git && rm -rf /var/lib/apk/* /var/cache/apk/*
 
 WORKDIR /mxids
 COPY . .
 RUN ./gradlew shadowJar
 
-FROM openjdk:21-jre-alpine
+FROM openjdk:22-ea-21-jdk-slim-bullseye
 
-RUN apk update && apk add bash && rm -rf /var/lib/apk/* /var/cache/apk/*
+RUN apt update && apt install bash && rm -rf /var/lib/apk/* /var/cache/apk/*
 
 VOLUME /etc/mxids
 VOLUME /var/mxids