code-server: docker initial release

Dockerfile

@@ -1,4 +1,26 @@
+FROM lsiobase/alpine:3.11 as buildstage
+
+ARG COMPOSE_VERSION
+
+RUN \
+ apk add --no-cache \
+    curl && \
+ if [ -z ${COMPOSE_VERSION+x} ]; then \
+	COMPOSE_VERSION=$(curl -sX GET "https://api.github.com/repos/docker/compose/releases/latest" \
+	| awk '/tag_name/{print $4;exit}' FS='[""]'); \
+ fi && \
+ mkdir -p /root-layer && \
+ curl -o \
+   /root-layer/docker-compose -L \
+   "https://github.com/docker/compose/releases/download/${COMPOSE_VERSION}/docker-compose-Linux-x86_64" && \
+ chmod +x /root-layer/docker-compose
+
+COPY root/ /root-layer/
+
+# runtime stage
 FROM scratch
 
-# copy local files
-COPY root/ /
+LABEL maintainer="aptalca"
+
+# Add files from buildstage
+COPY --from=buildstage /root-layer/ /