Add container image build script

Containerfile

@@ -0,0 +1,38 @@
+FROM docker.io/library/alpine AS build
+
+RUN --mount=type=cache,target=/var/cache \
+	apk add \
+		cargo \
+		protoc \
+		rust \
+	&& :
+
+COPY src /src/src
+
+COPY Cargo.* /src/
+
+WORKDIR /src
+
+RUN cargo build --release
+
+
+FROM docker.io/library/alpine
+
+RUN --mount=type=cache,target=/var/cache \
+	apk add \
+		libgcc \
+	&& :
+
+COPY --from=build /src/target/release/luci /usr/local/bin/luci
+
+COPY dch-root-ca.crt /etc/ssl/certs
+
+COPY nsenter.sh /usr/local/libexec/nsenter.sh
+
+RUN for cmd in \
+	systemctl \
+	; do \
+	ln -s /usr/local/libexec/nsenter.sh /usr/local/bin/${cmd} \
+	; done
+
+ENTRYPOINT ["luci"]

dch-root-ca.crt

@@ -0,0 +1,12 @@
+-----BEGIN CERTIFICATE-----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+-----END CERTIFICATE-----

nsenter.sh

@@ -0,0 +1,3 @@
+#!/bin/sh
+
+exec nsenter -t 1 -m -u -i -n -p "${0##*/}" "$@"