diff --git a/porting/manyfold/Dockerfile b/apps/manyfold/Dockerfile
similarity index 92%
rename from porting/manyfold/Dockerfile
rename to apps/manyfold/Dockerfile
index 76338d8b3..24f2e6ac4 100644
--- a/porting/manyfold/Dockerfile
+++ b/apps/manyfold/Dockerfile
@@ -1,4 +1,4 @@
-FROM ghcr.io/trueforge-org/node:22.22.0
+FROM ghcr.io/trueforge-org/node:24.15.0
 
 ARG VERSION
 ARG TARGETARCH
@@ -34,6 +34,7 @@ RUN \
         libffi-dev \
         libmariadb-dev \
         libpq-dev \
+        pkg-config \
         ruby-dev \
         libyaml-dev && \
     echo "**** install manyfold ****" && \
@@ -64,6 +65,9 @@ RUN \
     APP_VERSION=v${VERSION} \
     bundle exec rake assets:precompile && \
     rm db/schema.rb && \
+    rm -rf /app/www/tmp /app/www/log && \
+    ln -s /tmp/manyfold/tmp /app/www/tmp && \
+    ln -s /tmp/manyfold/log /app/www/log && \
     echo "**** cleanup ****" && \
     yarn cache clean && \
     apt-get purge -y --auto-remove \
@@ -71,6 +75,7 @@ RUN \
         libffi-dev \
         libmariadb-dev \
         libpq-dev \
+        pkg-config \
         ruby-dev \
         libyaml-dev && \
     apt-get clean && \
diff --git a/apps/manyfold/container-test.yaml b/apps/manyfold/container-test.yaml
new file mode 100644
index 000000000..045080551
--- /dev/null
+++ b/apps/manyfold/container-test.yaml
@@ -0,0 +1,8 @@
+# yaml-language-server: $schema=https://raw.githubusercontent.com/trueforge-org/forgetool/refs/heads/main/pkg/containers/test/container-test.schema.json
+
+# narrowed: requires external postgresql (opt_dependencies) and redis for sidekiq workers;
+# full functional test not feasible in single-container suite
+timeoutSeconds: 240
+filePaths:
+- /app/www/vendor/bundle/ruby/3.3.0/bin/foreman
+- /app/www/vendor/bundle/ruby/3.3.0/bin/bundle
diff --git a/porting/manyfold/docker-bake.hcl b/apps/manyfold/docker-bake.hcl
similarity index 100%
rename from porting/manyfold/docker-bake.hcl
rename to apps/manyfold/docker-bake.hcl
diff --git a/porting/manyfold/root/generate-secret b/apps/manyfold/root/generate-secret
similarity index 100%
rename from porting/manyfold/root/generate-secret
rename to apps/manyfold/root/generate-secret
diff --git a/porting/manyfold/settings.yaml b/apps/manyfold/settings.yaml
similarity index 100%
rename from porting/manyfold/settings.yaml
rename to apps/manyfold/settings.yaml
diff --git a/porting/manyfold/start.sh b/apps/manyfold/start.sh
similarity index 96%
rename from porting/manyfold/start.sh
rename to apps/manyfold/start.sh
index 6e59b9b84..30ca83517 100755
--- a/porting/manyfold/start.sh
+++ b/apps/manyfold/start.sh
@@ -1,5 +1,8 @@
 #!/usr/bin/env bash
 
+# Create required runtime directories in /tmp
+mkdir -p /tmp/manyfold/tmp /tmp/manyfold/log
+
 # set secret key if unset
 SECRET_FILE="/config/secret_key_base.txt"
 if [[ -w /config ]]; then
@@ -16,12 +19,11 @@ if [[ -w /config ]]; then
     fi
     printf "%s" "${SECRET_KEY_BASE}" > /var/run/s6/container_environment/SECRET_KEY_BASE
 
-    mkdir -p /app/www/log /app/www/tmp
 else
     # /config is readonly, use /tmp
     echo "Warning: /config is read-only, using /tmp for runtime data"
     SECRET_FILE="/tmp/manyfold/secret_key_base.txt"
-    mkdir -p /tmp/manyfold /app/www/log /app/www/tmp
+    mkdir -p /tmp/manyfold
 
     if [ -n "${SECRET_KEY_BASE}" ]; then
       echo "**** SECRET_KEY_BASE set in environment. ****"
diff --git a/porting/manyfold/container-test.yaml b/porting/manyfold/container-test.yaml
deleted file mode 100644
index 4d22f5b29..000000000
--- a/porting/manyfold/container-test.yaml
+++ /dev/null
@@ -1,6 +0,0 @@
-# yaml-language-server: $schema=https://raw.githubusercontent.com/trueforge-org/forgetool/refs/heads/main/pkg/containers/test/container-test.schema.json
-
-timeoutSeconds: 240
-http:
-- port: '3214'
-  path: /