try adding helmdocs to release container

containers/apps/truecharts-release/Dockerfile

@@ -1,6 +1,8 @@
 # hadolint ignore=DL3007
 FROM quay.io/helmpack/chart-releaser:v1.2.1 AS cr
 
+# hadolint ignore=DL3007
+FROM jnorwood/helm-docs:v1.5.0 AS hd
 
 # hadolint ignore=DL3007
 FROM ixsystems/catalog_validation:latest
@@ -16,5 +18,9 @@ SHELL ["/bin/bash", "-o", "pipefail", "-c"]
 RUN --mount=type=bind,from=cr,source=/usr/local/bin,target=/crbin \
   cp /crbin/cr /usr/local/bin/cr
 
+# hadolint ignore=DL3008,DL3015,SC2086,SC2155
+RUN --mount=type=bind,from=hd,source=/usr/bin/,target=/hdbin \
+  cp /hdbin/"helm-docs /usr/local/bin/helm-docs
+
 LABEL "maintainer"="TrueCharts <info@truecharts.org>"
 LABEL "org.opencontainers.image.source"="https://github.com/truecharts/apps"