improve docker build procedure

.dockerignore

@@ -0,0 +1,4 @@
+.direnv
+/target
+/result
+/build

Docker.static-builder

@@ -1,3 +0,0 @@
-FROM rust:alpine
-RUN  apk add --no-cache pkgconf libseccomp-static libseccomp-dev musl-dev
-ENTRYPOINT ["/usr/local/cargo/bin/cargo", "build"]

README.md

@@ -28,18 +28,13 @@ cargo build
 ### Build static with container
 
 ```bash
-docker build -t x2t-sandbox-builder:1 -f Docker.static-builder .
-docker run -it --rm \
-    -v $PWD:/src --workdir /src \
-    -e RUSTFLAGS='-C target-feature=+crt-static' \
-    x2t-sandbox-builder:1 \
-    --features tracing-mode \
-    --target x86_64-unknown-linux-musl \
-    --release \
-    
-./target/x86_64-unknown-linux-musl/release/x2t-sandbox --help
-```
+for link_type in static-build ubuntu-22.04; do
+  docker build -t x2t-sandbox-builder:copy-to-data -f build/Dockerfile.$link_type --target copy-to-data .
+  docker run -it --rm -v output/$link_type:/data x2t-sandbox-builder:copy-to-data
+done
 
+/output/path/x2t-sandbox --help
+```
 
 ### Generate syscalls with strace
 

build/Dockerfile.static-build

@@ -0,0 +1,20 @@
+ARG  REGISTRY=docker.io
+ARG  BUILDER_BASE=library/rust:alpine
+ARG  RUNTIME_BASE=library/alpine:latest
+
+FROM ${REGISTRY}/${BUILDER_BASE} as builder
+RUN  apk add --no-cache pkgconf libseccomp-static libseccomp-dev musl-dev
+COPY . /src
+WORKDIR /src
+RUN  cargo build --release
+
+FROM ${REGISTRY}/${RUNTIME_BASE} as base
+
+FROM base as runtime
+COPY --from=builder /src/target/release/x2t-sandbox /usr/local/bin/x2t-sandbox
+
+
+FROM ${REGISTRY}/${RUNTIME_BASE} as copy-to-data
+FROM base as copy-to-data
+COPY --from=builder /src/target/release/x2t-sandbox /x2t-sandbox
+CMD  ["cp", "-v", "/x2t-sandbox", "/data/x2t-sandbox"]

build/Dockerfile.ubuntu-22.04

@@ -0,0 +1,20 @@
+ARG  REGISTRY=docker.io
+ARG  BASE=library/ubuntu:22.04
+
+FROM ${REGISTRY}/${BASE} as base
+
+FROM base as builder
+RUN  apt update && apt install build-essential libseccomp-dev -y
+RUN  curl --proto '=https' --tlsv1.2 -sSf https://sh.rustup.rs | sh
+COPY . /src
+WORKDIR /src
+RUN  cargo build --release
+
+FROM base as runtime
+RUN  apt update && apt install libseccomp -y && rm -rf /var/apt
+COPY --from=builder /src/target/release/x2t-sandbox /usr/local/bin/x2t-sandbox
+
+FROM base as copy-to-data
+COPY --from=builder /src/target/release/x2t-sandbox /x2t-sandbox
+CMD  ["cp", "-v", "/x2t-sandbox", "/data/x2t-sandbox"]
+