Move container-related files into separate subdir

Dockerfile → container/Dockerfile

@@ -25,12 +25,14 @@ RUN chown -R builder:builder /ctng
 USER builder
 RUN git clone https://github.com/crosstool-ng/crosstool-ng
 WORKDIR /ctng/crosstool-ng
+# Known-working version
+RUN git checkout 36ad0b17a732aaffe4701d5d8d410d6e3e3abba9
 COPY no-ulimit.patch .
 RUN git apply no-ulimit.patch
 RUN ./bootstrap && \
   ./configure --enable-local && \
   make -j$(nproc)
-RUN ./ct-ng riscv32-unknown-elf
+COPY ctng-config .config
 RUN ./ct-ng build
 
 
@@ -75,7 +77,7 @@ FROM docker.io/debian:bookworm AS final
 RUN apt update && apt upgrade -y
 RUN apt install -y libpixman-1-0 libfdt1 libglib2.0-0 libiscsi7 libnfs13
 # Install additional developer tools
-RUN apt install -y gdb-multiarch make
+RUN apt install -y make
 COPY --from=qemu /usr/local /usr/local
 COPY --from=toolchain /home/builder/x-tools/riscv32-unknown-elf/* /usr/local/bin/
 # Install boot ROM for board
@@ -83,4 +85,4 @@ COPY --from=bootrom /bootrom /bootrom
 # Converting this from the ELF requires a patched esptool, so just copy it from our repo
 COPY esp32c3_rev3_rom.bin /bootrom
 
-WORKDIR /work
\ No newline at end of file
+WORKDIR /work