hulthe
25efbd5f5c
CI / build (pull_request) Successful in 13s
slim now works with any Containerfile by injecting distro-agnostic scripts at build time: - /slim/init: mounts special filesystems, configures networking (static QEMU slirp), sets up cgroup2, timezone, and rootless container prereqs. Parses slim.cmd=<base64> from the kernel cmdline for runtime overrides, otherwise execs /slim/exec. - /slim/exec: generated from the image's CMD/ENTRYPOINT (via podman image inspect), overridable via --cmd at build and run time. Changes: - New src/inject.rs: inspect image config, infer command, generate /slim/exec script, inject /slim/ into mounted rootfs - New src/scripts/slim-init.sh: the universal init script (include_str!) - build.rs: rename --init to --cmd, inject scripts before packing, drop Meta::save, restructure to ensure unmount always runs - qemu.rs: hardcode init=/slim/init, add --cmd (base64 on cmdline), drop Meta::load, add -no-reboot - Remove src/meta.rs and meta.toml (no longer needed) - Cargo.toml: add serde_json + base64, remove unused walkdir + cpio + toml - Example Containerfiles simplified to plain FROM + CMD - New example/test.sh for manual verification - README updated for new workflow
114 lines
3.4 KiB
Bash
Executable File
114 lines
3.4 KiB
Bash
Executable File
#!/bin/bash
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# Test script for slim - boots containers and verifies CMD inference/override.
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# Requires: podman, qemu-system-x86_64, KVM, and a kernel at
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# $XDG_DATA_HOME/slim-rs/vmlinuz.
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set -u
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SCRIPT_DIR="$(cd "$(dirname "$0")" && pwd)"
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SLIM_BIN="$SCRIPT_DIR/../target/debug/slim"
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TIMEOUT=120
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pass=0
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fail=0
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report() {
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if [ "$1" = "pass" ]; then
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echo " PASS: $2"
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pass=$((pass + 1))
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else
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echo " FAIL: $2"
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fail=$((fail + 1))
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fi
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}
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check_output() {
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output="$1"
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marker="$2"
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label="$3"
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if echo "$output" | grep -q "$marker"; then
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report pass "$label"
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else
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report fail "$label (expected marker: $marker)"
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fi
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}
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cleanup() {
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"$SLIM_BIN" image rm "$1" >/dev/null 2>&1 || true
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podman image rm "$2" >/dev/null 2>&1 || true
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}
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test_distro() {
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distro="$1"
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from="$2"
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extra_setup="$3"
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echo "=== Testing $distro ==="
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work="$(mktemp -d)"
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# === Test 1: CMD-inferred ===
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echo "-- Test 1: CMD-inferred"
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cat > "$work/Containerfile.infer" <<EOF
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FROM $from
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$extra_setup
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CMD ["/bin/sh", "-c", "echo CMD_INFERRED_OK; ping -c1 1.1.1.1 >/dev/null 2>&1 && echo PING_OK; ping -c1 example.org >/dev/null 2>&1 && echo DNS_OK; poweroff -f"]
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EOF
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img="slim-test-$distro-infer"
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if podman build -t "$img" -f "$work/Containerfile.infer" >/dev/null 2>&1; then
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"$SLIM_BIN" build qcow2 "$img" >/dev/null 2>&1
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output=$(timeout "$TIMEOUT" "$SLIM_BIN" run "$img" 2>&1 || true)
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check_output "$output" "CMD_INFERRED_OK" "$distro CMD-inferred"
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check_output "$output" "PING_OK" "$distro ping 1.1.1.1"
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check_output "$output" "DNS_OK" "$distro DNS lookup"
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else
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report fail "$distro CMD-inferred (podman build failed)"
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fi
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cleanup "$img" "$img"
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# === Test 2: slim run --cmd override ===
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echo "-- Test 2: slim run --cmd override"
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cat > "$work/Containerfile.run" <<EOF
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FROM $from
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$extra_setup
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CMD ["/bin/sh", "-c", "echo SHOULD_NOT_APPEAR; poweroff -f"]
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EOF
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img="slim-test-$distro-run"
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if podman build -t "$img" -f "$work/Containerfile.run" >/dev/null 2>&1; then
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"$SLIM_BIN" build qcow2 "$img" >/dev/null 2>&1
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output=$(timeout "$TIMEOUT" "$SLIM_BIN" run "$img" --cmd 'echo RUN_OVERRIDE_OK; poweroff -f' 2>&1 || true)
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check_output "$output" "RUN_OVERRIDE_OK" "$distro run --cmd override"
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else
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report fail "$distro run --cmd override (podman build failed)"
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fi
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cleanup "$img" "$img"
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# === Test 3: slim build --cmd override ===
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echo "-- Test 3: slim build --cmd override"
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cat > "$work/Containerfile.build" <<EOF
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FROM $from
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$extra_setup
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CMD ["/bin/sh", "-c", "echo SHOULD_NOT_APPEAR; poweroff -f"]
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EOF
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img="slim-test-$distro-build"
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if podman build -t "$img" -f "$work/Containerfile.build" >/dev/null 2>&1; then
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"$SLIM_BIN" build qcow2 "$img" --cmd 'echo BUILD_OVERRIDE_OK; poweroff -f' >/dev/null 2>&1
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output=$(timeout "$TIMEOUT" "$SLIM_BIN" run "$img" 2>&1 || true)
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check_output "$output" "BUILD_OVERRIDE_OK" "$distro build --cmd override"
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else
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report fail "$distro build --cmd override (podman build failed)"
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fi
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cleanup "$img" "$img"
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rm -rf "$work"
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}
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echo "Building slim..."
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cargo build 2>&1
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test_distro "alpine" "alpine:latest" ""
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test_distro "archlinux" "archlinux:latest" "RUN pacman -Sy --noconfirm iputils iproute2 util-linux; pacman -Sc --noconfirm"
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echo ""
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echo "=== Results: $pass passed, $fail failed ==="
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[ "$fail" -eq 0 ]
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