Add docker.

docker/Dockerfile

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+FROM alpine:3.17 AS build
+RUN apk add --no-cache build-base musl-dev git autoconf make texinfo gnutls-dev ncurses-dev gawk
+
+
+FROM build AS build-emacs
+RUN git clone --depth 1 --branch emacs-29.1 https://git.savannah.gnu.org/git/emacs.git /root/emacs
+WORKDIR /root/emacs
+RUN mkdir /root/dist
+RUN ./autogen.sh
+RUN ./configure --prefix /usr --without-x --without-sound
+RUN make
+RUN make DESTDIR="/root/dist" install
+
+
+FROM build AS build-org-mode
+COPY --from=build-emacs /root/dist/ /
+RUN mkdir /root/dist
+RUN mkdir /root/org-mode && git -C /root/org-mode init --initial-branch=main && git -C /root/org-mode remote add origin https://git.savannah.gnu.org/git/emacs/org-mode.git && git -C /root/org-mode fetch origin cc435cba71a99ee7b12676be3b6e1211a9cb7285 && git -C /root/org-mode checkout FETCH_HEAD
+WORKDIR /root/org-mode
+RUN make compile
+RUN make DESTDIR="/root/dist" install
+
+
+FROM rustlang/rust:nightly-alpine3.17 AS build-org-investigation
+RUN apk add --no-cache musl-dev
+RUN mkdir /root/org-investigation
+WORKDIR /root/org-investigation
+COPY . .
+RUN CARGO_TARGET_DIR=/target cargo build --release
+
+
+FROM alpine:3.17 AS run
+RUN apk add --no-cache ncurses gnutls
+COPY --from=build-emacs /root/dist/ /
+COPY --from=build-org-mode /root/dist/ /
+COPY --from=build-org-investigation /target/release/org_ownership_investigation /usr/bin/
+COPY static /opt/org-investigation/static
+WORKDIR /opt/org-investigation
+CMD ["/usr/bin/org_ownership_investigation"]