add dockerfile (#72)

Dockerfile

@@ -0,0 +1,70 @@
+FROM alpine:3.18 as ugit-ops
+
+RUN apk add --no-cache \
+    bash \
+    coreutils \
+    git \
+    ncurses \
+    curl
+
+# Download fzf binary from GitHub, pin to 0.46.0, ugit requires minimum 0.21.0
+RUN curl -L -o fzf.tar.gz https://github.com/junegunn/fzf/releases/download/0.46.0/fzf-0.46.0-linux_amd64.tar.gz && \
+    tar -xzf fzf.tar.gz && \
+    mv fzf /usr/bin/
+
+# Copy only the ugit script into the container at /app
+COPY ugit .
+
+# Set permissions and move the script to path
+RUN chmod +x ugit && mv ugit /usr/bin/
+
+# Second stage: Copy only necessary binaries and their dependencies
+FROM scratch
+
+
+LABEL description="Undo your last oopsie in git with ugit"
+LABEL maintainer="Bhupesh Varshney <[email protected]>"
+
+COPY --from=ugit-ops /usr/bin/ugit /bin/
+COPY --from=ugit-ops /usr/bin/git /usr/bin/
+COPY --from=ugit-ops /usr/bin/fzf /usr/bin/
+COPY --from=ugit-ops /usr/bin/tput /usr/bin/
+COPY --from=ugit-ops /usr/bin/nl /usr/bin/
+COPY --from=ugit-ops /usr/bin/awk /usr/bin/
+COPY --from=ugit-ops /usr/bin/xargs /usr/bin/
+COPY --from=ugit-ops /usr/bin/cut /usr/bin/
+COPY --from=ugit-ops /usr/bin/tr /usr/bin/
+COPY --from=ugit-ops /bin/bash /bin/
+
+# copy lib files
+
+# COPY --from=ugit-ops /usr/lib/libncursesw* /usr/lib/
+COPY --from=ugit-ops /usr/lib/libncursesw.so.6 /usr/lib/
+
+# COPY --from=ugit-ops /usr/lib/libpcre* /usr/lib/
+COPY --from=ugit-ops /usr/lib/libpcre2-8.so.0 /usr/lib/
+
+# COPY --from=ugit-ops /usr/lib/libreadline* /usr/lib/
+COPY --from=ugit-ops /usr/lib/libreadline.so.8 /usr/lib/
+
+COPY --from=ugit-ops /lib/libacl.so.1 /lib/
+COPY --from=ugit-ops /lib/libattr.so.1 /lib/
+COPY --from=ugit-ops /lib/libc.musl-* /lib/
+COPY --from=ugit-ops /lib/ld-musl-* /lib/
+COPY --from=ugit-ops /lib/libutmps.so.0.1 /lib/
+COPY --from=ugit-ops /lib/libskarnet.so.2.13 /lib/
+COPY --from=ugit-ops /lib/libz.so.1 /lib/
+
+# copy terminfo database
+COPY --from=ugit-ops /etc/terminfo/x/xterm-256color /usr/share/terminfo/x/
+
+# Gib me all the colors
+ENV TERM=xterm-256color
+# Let fzf know our deault shell
+ENV SHELL=/bin/bash
+# Let ugit know we are running in docker
+ENV UGIT_RUNNING_IN_DOCKER=true
+
+WORKDIR /app
+# Run ugit when the container launches
+ENTRYPOINT ["/bin/bash", "/bin/ugit"]