Added build script for graal and temurin builds

Dockerfile

@@ -0,0 +1,19 @@
+ARG DOCKER_IMAGE
+FROM ${DOCKER_IMAGE}
+
+ARG VERSION_ID
+ARG VERSION_SHA1
+ENV MINECRAFT_VERSION=${VERSION_ID}
+ENV INIT_MEMORY="512M"
+ENV MAX_MEMORY="2G"
+WORKDIR /server
+
+# Copy server file and verify checksum
+VOLUME [ "/server" ]
+COPY versions/${VERSION_ID}/server.jar /server.jar
+COPY eula.txt /server/
+RUN echo -n "${VERSION_SHA1} /server.jar" | sha1sum -c -
+
+# Run server
+EXPOSE 25565
+ENTRYPOINT ["java", "-jar", "/server.jar", "--nogui", "-Xms${INIT_MEMORY}", "-Xmx${MAX_MEMORY}"]