feat(Dockerfile.crystal): build alpine image with llvm 18

Dockerfile.crystal

@@ -1,7 +1,7 @@
 ARG alpine_version=latest
 
 FROM --platform=$BUILDPLATFORM alpine:$alpine_version AS builder
-ARG llvm_version=16
+ARG llvm_version=18
 # add dependencies required for building crystal from source
 RUN apk add --update --no-cache \
     crystal shards \
@@ -12,12 +12,11 @@ RUN apk add --update --no-cache \
 ARG TARGETARCH
 # Build crystal
 WORKDIR /usr/src/crystal
-ARG crystal_version=1.12.1
+ARG crystal_version=1.14.0
 RUN git clone --depth=1 --single-branch --branch=$crystal_version https://github.com/crystal-lang/crystal.git . && \
   gzip -9 man/crystal.1 && \
   mkdir .build && \
-  make crystal static=1 release=1 target=$TARGETARCH-alpine-linux-musl PREFIX=/usr FLAGS="--no-debug" | tail -1 > .build/crystal.sh && \
-  rm src/llvm/ext/llvm_ext.o
+  make crystal static=1 release=1 target=$TARGETARCH-alpine-linux-musl PREFIX=/usr FLAGS="--no-debug" | tail -1 > .build/crystal.sh
 # Build shards
 WORKDIR /usr/src/shards
 ARG shards_version=0.18.0
@@ -27,7 +26,7 @@ RUN git clone --depth=1 --single-branch --branch=v${shards_version} https://gith
 
 # link on target platform
 FROM alpine:$alpine_version AS target-builder
-ARG llvm_version=16
+ARG llvm_version=18
 RUN apk add --update --no-cache \
     llvm${llvm_version}-dev llvm${llvm_version}-static \
     zlib-static yaml-static libxml2 libxml2-dev pcre2-dev libevent-static \
@@ -36,7 +35,7 @@ RUN apk add --update --no-cache libxml2-static || true
 RUN apk add --update --no-cache zstd-static || true
 # Build libgc
 WORKDIR /usr/src/libc
-ARG gc_version=8.2.4
+ARG gc_version=8.2.6
 RUN git clone --depth=1 --single-branch --branch=v${gc_version} https://github.com/ivmai/bdwgc.git . && \
   ./autogen.sh && \
   ./configure --disable-debug --disable-shared --enable-large-config --prefix=/usr && \