diff --git a/Dockerfile-ubuntu.template b/Dockerfile-ubuntu.template
new file mode 100644
index 000000000..d8c3b2a56
--- /dev/null
+++ b/Dockerfile-ubuntu.template
@@ -0,0 +1,109 @@
+FROM ubuntu:%%UBUNTU_VERSION%%
+
+LABEL maintainer="NGINX Docker Maintainers <docker-maint@nginx.com>"
+
+ENV NGINX_VERSION   %%NGINX_VERSION%%
+ENV NJS_VERSION     %%NJS_VERSION%%
+ENV PKG_RELEASE     %%PKG_RELEASE%%
+
+RUN set -x \
+# create nginx user/group first, to be consistent throughout docker variants
+    && groupadd --system --gid 101 nginx \
+    && useradd --system --gid nginx --no-create-home --home /nonexistent --comment "nginx user" --shell /bin/false --uid 101 nginx \
+    && apt-get update \
+    && apt-get install --no-install-recommends --no-install-suggests -y gnupg1 ca-certificates \
+    && \
+    NGINX_GPGKEY=573BFD6B3D8FBC641079A6ABABF5BD827BD9BF62; \
+    NGINX_GPGKEY_PATH=/usr/share/keyrings/nginx-archive-keyring.gpg; \
+    export GNUPGHOME="$(mktemp -d)"; \
+    found=''; \
+    for server in \
+        hkp://keyserver.ubuntu.com:80 \
+        pgp.mit.edu \
+    ; do \
+        echo "    Fetching GPG key $NGINX_GPGKEY from $server"; \
+        gpg1 --keyserver "$server" --keyserver-options timeout=10 --recv-keys "$NGINX_GPGKEY" && found=yes && break; \
+    done; \
+    test -z "$found" && echo >&2 "error: failed to fetch GPG key $NGINX_GPGKEY" && exit 1; \
+    gpg1 --export "$NGINX_GPGKEY" > "$NGINX_GPGKEY_PATH" ; \
+    rm -rf "$GNUPGHOME"; \
+    apt-get remove --purge --auto-remove -y gnupg1 && rm -rf /var/lib/apt/lists/* \
+    && dpkgArch="$(dpkg --print-architecture)" \
+    && nginxPackages="%%PACKAGES%%
+    " \
+    && case "$dpkgArch" in \
+        amd64|arm64) \
+# arches officialy built by upstream
+            echo "deb [signed-by=$NGINX_GPGKEY_PATH] %%PACKAGEREPO%% %%UBUNTU_VERSION%% nginx" >> /etc/apt/sources.list.d/nginx.list \
+            && apt-get update \
+            ;; \
+        *) \
+# we're on an architecture upstream doesn't officially build for
+# let's build binaries from the published source packages
+            echo "deb-src [signed-by=$NGINX_GPGKEY_PATH] %%PACKAGEREPO%% %%UBUNTU_VERSION%% nginx" >> /etc/apt/sources.list.d/nginx.list \
+            \
+# new directory for storing sources and .deb files
+            && tempDir="$(mktemp -d)" \
+            && chmod 777 "$tempDir" \
+# (777 to ensure APT's "_apt" user can access it too)
+            \
+# save list of currently-installed packages so build dependencies can be cleanly removed later
+            && savedAptMark="$(apt-mark showmanual)" \
+            \
+# build .deb files from upstream's source packages (which are verified by apt-get)
+            && apt-get update \
+            && apt-get build-dep -y %%BUILDTARGET%% \
+            && ( \
+                cd "$tempDir" \
+                && DEB_BUILD_OPTIONS="nocheck parallel=$(nproc)" \
+                    apt-get source --compile %%BUILDTARGET%% \
+            ) \
+# we don't remove APT lists here because they get re-downloaded and removed later
+            \
+# reset apt-mark's "manual" list so that "purge --auto-remove" will remove all build dependencies
+# (which is done after we install the built packages so we don't have to redownload any overlapping dependencies)
+            && apt-mark showmanual | xargs apt-mark auto > /dev/null \
+            && { [ -z "$savedAptMark" ] || apt-mark manual $savedAptMark; } \
+            \
+# create a temporary local APT repo to install from (so that dependency resolution can be handled by APT, as it should be)
+            && ls -lAFh "$tempDir" \
+            && ( cd "$tempDir" && dpkg-scanpackages . > Packages ) \
+            && grep '^Package: ' "$tempDir/Packages" \
+            && echo "deb [ trusted=yes ] file://$tempDir ./" > /etc/apt/sources.list.d/temp.list \
+# work around the following APT issue by using "Acquire::GzipIndexes=false" (overriding "/etc/apt/apt.conf.d/docker-gzip-indexes")
+#   Could not open file /var/lib/apt/lists/partial/_tmp_tmp.ODWljpQfkE_._Packages - open (13: Permission denied)
+#   ...
+#   E: Failed to fetch store:/var/lib/apt/lists/partial/_tmp_tmp.ODWljpQfkE_._Packages  Could not open file /var/lib/apt/lists/partial/_tmp_tmp.ODWljpQfkE_._Packages - open (13: Permission denied)
+            && apt-get -o Acquire::GzipIndexes=false update \
+            ;; \
+    esac \
+    \
+    && apt-get install --no-install-recommends --no-install-suggests -y \
+                        $nginxPackages \
+                        gettext-base \
+                        curl \
+    && apt-get remove --purge --auto-remove -y && rm -rf /var/lib/apt/lists/* /etc/apt/sources.list.d/nginx.list \
+    \
+# if we have leftovers from building, let's purge them (including extra, unnecessary build deps)
+    && if [ -n "$tempDir" ]; then \
+        apt-get purge -y --auto-remove \
+        && rm -rf "$tempDir" /etc/apt/sources.list.d/temp.list; \
+    fi \
+# forward request and error logs to docker log collector
+    && ln -sf /dev/stdout /var/log/nginx/access.log \
+    && ln -sf /dev/stderr /var/log/nginx/error.log \
+# create a docker-entrypoint.d directory
+    && mkdir /docker-entrypoint.d
+
+COPY docker-entrypoint.sh /
+COPY 10-listen-on-ipv6-by-default.sh /docker-entrypoint.d
+COPY 15-local-resolvers.envsh /docker-entrypoint.d
+COPY 20-envsubst-on-templates.sh /docker-entrypoint.d
+COPY 30-tune-worker-processes.sh /docker-entrypoint.d
+ENTRYPOINT ["/docker-entrypoint.sh"]
+
+EXPOSE 80
+
+STOPSIGNAL SIGQUIT
+
+CMD ["nginx", "-g", "daemon off;"]
diff --git a/update.sh b/update.sh
index 31d9a37c9..f0b439078 100755
--- a/update.sh
+++ b/update.sh
@@ -29,14 +29,19 @@ declare -A pkg=(
     [stable]=1
 )
 
+declare -A alpine=(
+    [mainline]='3.18'
+    [stable]='3.18'
+)
+
 declare -A debian=(
     [mainline]='bookworm'
     [stable]='bullseye'
 )
 
-declare -A alpine=(
-    [mainline]='3.18'
-    [stable]='3.18'
+declare -A ubuntu=(
+    [mainline]='lunar'
+    [stable]='jammy'
 )
 
 # When we bump njs version in a stable release we don't move the tag in the
@@ -73,6 +78,9 @@ get_packages() {
     debian*:*)
         sep="+"
         ;;
+    ubuntu*:*)
+        sep="+"
+        ;;
     esac
 
     case "$distro" in
@@ -83,6 +91,11 @@ get_packages() {
 
     echo -n ' \\\n'
     case "$distro" in
+    ubuntu)
+        for p in nginx; do
+            echo -n '        '"$p"'=${NGINX_VERSION}-'"$r"'${PKG_RELEASE} \\'
+        done
+        ;;
     *-slim)
         for p in nginx; do
             echo -n '        '"$p"'=${NGINX_VERSION}-'"$r"'${PKG_RELEASE} \\'
@@ -119,6 +132,7 @@ get_packagever() {
     local suffix=
 
     [ "${distro}" = "debian" ] && suffix="~${debianver}"
+    [ "${distro}" = "ubuntu" ] && suffix="~${ubuntuver}"
 
     echo ${pkg[$branch]}${suffix}
 }
@@ -141,6 +155,9 @@ get_buildtarget() {
         debian-perl)
             echo "nginx-module-perl=\${NGINX_VERSION}-\${PKG_RELEASE}"
             ;;
+        ubuntu)
+            echo "\$nginxPackages"
+            ;;
     esac
 }
 
@@ -157,12 +174,16 @@ __EOF__
 for branch in "${branches[@]}"; do
     for variant in \
         alpine{,-perl,-slim} \
-        debian{,-perl}; do
+        debian{,-perl} \
+        ubuntu; do
         echo "$branch: $variant dockerfiles"
         dir="$branch/$variant"
         variant="$(basename "$variant")"
 
-        [ -d "$dir" ] || continue
+        if [ ! -d "$dir" ]; then
+            echo "     Wrning: $dir not found, skipping"
+            continue
+        fi
 
         template="Dockerfile-${variant}.template"
         {
@@ -171,6 +192,7 @@ for branch in "${branches[@]}"; do
         } >"$dir/Dockerfile"
 
         debianver="${debian[$branch]}"
+        ubuntuver="${ubuntu[$branch]}"
         alpinever="${alpine[$branch]}"
         nginxver="${nginx[$branch]}"
         njsver="${njs[${branch}]}"
@@ -185,6 +207,7 @@ for branch in "${branches[@]}"; do
         sed -i.bak \
             -e 's,%%ALPINE_VERSION%%,'"$alpinever"',' \
             -e 's,%%DEBIAN_VERSION%%,'"$debianver"',' \
+            -e 's,%%UBUNTU_VERSION%%,'"$ubuntuver"',' \
             -e 's,%%NGINX_VERSION%%,'"$nginxver"',' \
             -e 's,%%NJS_VERSION%%,'"$njsver"',' \
             -e 's,%%PKG_RELEASE%%,'"$packagever"',' \
@@ -199,7 +222,8 @@ for branch in "${branches[@]}"; do
 
     for variant in \
         alpine-slim \
-        debian; do \
+        debian \
+        ubuntu; do \
         echo "$branch: $variant entrypoint scripts"
         dir="$branch/$variant"
         cp -a entrypoint/*.sh "$dir/"