diff --git a/Dockerfile b/Dockerfile
index 7438680..ef7b963 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -5,7 +5,7 @@ ADD https://salsa.debian.org/postgresql/postgresql-common/-/raw/master/pgdg/apt.
 RUN chmod +x /usr/local/bin/apt.postgresql.org.sh \
     && apt-get update \
     && apt-get install -y --no-install-recommends \
-        build-essential clang llvm llvm-dev llvm-runtime \
+        build-essential clang llvm llvm-dev llvm-runtime cmake \
         pgxnclient libtap-parser-sourcehandler-pgtap-perl sudo gosu \
         ca-certificates gnupg2 zip unzip curl git libicu-dev libxml2 locales ssl-cert \
     && apt-get -y purge postgresql-client-common \
@@ -18,7 +18,12 @@ RUN chmod +x /usr/local/bin/apt.postgresql.org.sh \
     && perl -i -pe 's/\bALL$/NOPASSWD:ALL/g' /etc/sudoers \
     && echo 'postgres	ALL=(ALL:ALL) NOPASSWD:ALL' >> /etc/sudoers \
     # Ensure Git can do stuff in the working directory (issue #5).
-    && git config --system --add safe.directory '*'
+    && git config --system --add safe.directory '*' \
+    # Install git-archive-all
+    && curl -O https://raw.githubusercontent.com/Kentzo/git-archive-all/1.23.1/git_archive_all.py \
+    && perl -i -pe 's/python/python3/' git_archive_all.py \
+    && install -m 0755 git_archive_all.py "$(git --exec-path)/git-archive-all" \
+    && rm git_archive_all.py
 
 COPY bin/* /usr/local/bin/
 
diff --git a/README.md b/README.md
index 34309f0..d1f9e96 100644
--- a/README.md
+++ b/README.md
@@ -340,6 +340,7 @@ The image includes these packages; pass additional packages to
 *   [llvm](https://packages.debian.org/bookworm/llvm)
 *   [llvm-dev](https://packages.debian.org/bookworm/llvm-dev)
 *   [llvm-runtime](https://packages.debian.org/bookworm/llvm-runtime)
+*   [cmake](https://packages.debian.org/bookworm/cmake)
 *   [pgxnclient](https://packages.debian.org/bookworm/pgxnclient)
 *   [libtap-parser-sourcehandler-pgtap-perl](https://packages.debian.org/bookworm/libtap-parser-sourcehandler-pgtap-perl)
 *   [sudo](https://packages.debian.org/bookworm/sudo)
@@ -354,6 +355,7 @@ The image includes these packages; pass additional packages to
 *   [libxml2](https://packages.debian.org/bookworm/libxml2)
 *   [locales](https://packages.debian.org/bookworm/locales)
 *   [ssl-cert](https://packages.debian.org/bookworm/ssl-cert)
+*   [git-archive-all](https://github.com/Kentzo/git-archive-all) (run `git archive-all`)
 
 Author
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