Build container locally

.devcontainer/Dockerfile

@@ -0,0 +1,34 @@
+# syntax=docker/dockerfile:1
+
+FROM ubuntu:24.04 AS build
+RUN apt-get update \
+	&& apt-get install -y --no-install-recommends \
+	build-essential \
+	make \
+	&& rm -rf /var/lib/apt/lists/*
+
+ADD https://github.com/z00m128/sjasmplus.git#v1.21.0 /sjasmplus
+RUN cd /sjasmplus && make && make install
+ADD https://boarstone.mcphail.uk/mcphail/spectrum_remload.git /ttttt
+RUN cd /ttttt && make ttttt
+ADD https://github.com/einar-saukas/ZX0.git /zx0
+RUN cd /zx0/src/ \
+	&& gcc -O2 -o zx0 zx0.c optimize.c compress.c memory.c \
+	&& gcc -O2 -o dzx0 dzx0.c
+
+FROM ubuntu:24.04
+RUN apt-get update \
+	&& apt-get install -y --no-install-recommends \
+	fuse-emulator-utils\
+	git \
+	make \
+	openssh-client\
+	pasmo \
+	z80asm \
+	z80dasm \
+	zmakebas \
+	&& rm -rf /var/lib/apt/lists/*
+COPY --from=build /usr/local/bin/sjasmplus /bin/sjasmplus
+COPY --from=build /ttttt/ttttt /bin/ttttt
+COPY --from=build /zx0/src/zx0 /bin/zx0
+COPY --from=build /zx0/src/dzx0 /bin/dzx0

.devcontainer/devcontainer.json

@@ -1,6 +1,6 @@
 {
 	"name": "ZX Spectrum dev tools",
-	"image": "boarstone.mcphail.uk/mcphail/speccydev",
+	"build": { "dockerfile": "Dockerfile" },
 	"remoteUser": "ubuntu",
 	"runArgs": [
 		"--network=host"