optimized dockerfile

Dockerfile

@@ -1,24 +1,44 @@
-# Use an official Alpine runtime as a parent image
-FROM alpine:3.18
+# First stage: Install packages
+FROM alpine:3.18 as builder
 
-# Set the working directory in the container to /app
-WORKDIR /app
-
-# Copy the current directory contents into the container at /app
-COPY . /app
-
-# Install dependencies
 RUN apk add --no-cache \
     bash \
-    gawk \
-    findutils \
     coreutils \
     git \
     ncurses \
-    fzf
+    fzf && \
+    apk --purge del apk-tools
+
+# Copy only the ugit script, LICENSE, and README.md into the container at /app
+WORKDIR /app
+COPY ugit .
+COPY LICENSE .
+COPY README.md .
 
 # Set permissions and move the script to path
 RUN chmod +x ugit && mv ugit /usr/local/bin/
 
+# Second stage: Copy only necessary binaries and their dependencies
+FROM busybox
+
+COPY --from=builder /usr/local/bin/ugit /usr/local/bin/
+COPY --from=builder /usr/bin/git /usr/bin/
+COPY --from=builder /usr/bin/fzf /usr/bin/
+COPY --from=builder /usr/bin/tput /usr/bin/
+COPY --from=builder /usr/bin/nl /usr/bin/
+COPY --from=builder /bin/bash /bin/
+
+COPY --from=builder /usr/lib/bash /usr/lib/bash
+COPY --from=builder /usr/lib/libncursesw.so.6 /usr/lib/
+COPY --from=builder /usr/lib/libncursesw.so.6.4 /usr/lib/
+COPY --from=builder /usr/lib/libpcre* /usr/lib/
+COPY --from=builder /usr/lib/libreadline* /usr/lib/
+COPY --from=builder /usr/lib/libunistring* /usr/lib/
+
+COPY --from=builder /lib/ /lib/
+
+COPY --from=builder /etc/terminfo/ /usr/share/terminfo/
+
+WORKDIR /app
 # Run ugit when the container launches
 CMD ["ugit"]