Update `make docs` procedure (#73540)

Co-authored-by: grafanabot <bot@grafana.com>

docs/docs.mk

@@ -76,7 +76,7 @@ docs-rm: ## Remove the docs container.
 
 .PHONY: docs-pull
 docs-pull: ## Pull documentation base image.
-	$(PODMAN) pull $(DOCS_IMAGE)
+	$(PODMAN) pull -q $(DOCS_IMAGE)
 
 make-docs: ## Fetch the latest make-docs script.
 make-docs:

docs/make-docs

@@ -133,6 +133,21 @@ readonly WEBSITE_MOUNTS="${WEBSITE_MOUNTS:-}"
 
 PODMAN="$(if command -v podman >/dev/null 2>&1; then echo podman; else echo docker; fi)"
 
+if ! command -v curl >/dev/null 2>&1; then
+  if ! command -v wget >/dev/null 2>&1; then
+    errr 'either `curl` or `wget` must be installed for this script to work.'
+
+    exit 1
+  fi
+fi
+
+if ! command -v "${PODMAN}" >/dev/null 2>&1; then
+  errr 'either `podman` or `docker` must be installed for this script to work.'
+
+  exit 1
+fi
+
+
 about() {
   cat <<EOF
 Test documentation locally with multiple source repositories.
@@ -332,9 +347,10 @@ repo_path() {
   done
   unset IFS
 
-  echo "ERRR: could not find project '${_repo}' in any of the paths in REPOS_PATH '${REPOS_PATH}'." >&2
-  echo "NOTE: you must have a checkout of the project '${_repo}' at '${REPOS_PATH##:*}/${_repo}'." >&2
-  echo "NOTE: if you have cloned the repository into a directory with a different name, consider changing it to ${_repo}." >&2
+  errr "could not find project '${_repo}' in any of the paths in REPOS_PATH '${REPOS_PATH}'."
+  note "you must have a checkout of the project '${_repo}' at '${REPOS_PATH##:*}/${_repo}'."
+  note "if you have cloned the repository into a directory with a different name, consider changing it to ${_repo}."
+
   unset _repo
   exit 1
 }
@@ -420,6 +436,50 @@ POSIX_HERESTRING
   unset _project _version _repo _path
 }
 
+await_build() {
+  url="$1"
+  req="$(if command -v curl >/dev/null 2>&1; then echo 'curl -s -o /dev/null'; else echo 'wget -q'; fi)"
+
+  sleep 2
+
+  if ${req} "${url}"; then
+    echo
+    echo "View documentation locally:"
+    for x in ${url_src_dst_vers}; do
+      IFS='^' read -r url _ _ <<POSIX_HERESTRING
+$x
+POSIX_HERESTRING
+
+      if [ -n "${url}" ]; then
+        if [ "${_url}" != "arbitrary" ]; then
+          echo "  ${url}"
+        fi
+      fi
+    done
+    echo
+    echo 'Press Ctrl+C to stop the server'
+  else
+    echo
+    errr 'The build was interrupted or a build error occurred, check the previous logs for possible causes.'
+  fi
+
+  unset url req
+}
+
+debg() {
+  if [ -n "${DEBUG}" ]; then
+    echo "DEBG: $1" >&2
+  fi
+}
+
+errr() {
+  echo "ERRR: $1" >&2
+}
+
+note() {
+  echo "NOTE: $1" >&2
+}
+
 url_src_dst_vers="$(url_src_dst_vers "$@")"
 
 volumes=""
@@ -445,13 +505,14 @@ POSIX_HERESTRING
 
   if [ "${_url}" != "arbitrary" ]; then
     if [ ! -f "${_src}/_index.md" ]; then
-      echo "ERRR: Index file '${_src}/_index.md' does not exist." >&2
-      echo "Is '${_src}' the correct source directory?" >&2
+      errr "Index file '${_src}/_index.md' does not exist."
+      note "Is '${_src}' the correct source directory?"
       exit 1
     fi
   fi
 
-  echo "DEBG: Mounting '${_src}' at container path '${_dst}'" >&2
+  debg "DEBG: Mounting '${_src}' at container path '${_dst}'"
+
   if [ -z "${volumes}" ]; then
     volumes="--volume=${_src}:${_dst}"
   else
@@ -535,33 +596,38 @@ EOF
     volumes="${volumes} --volume=${tempfile}:/entrypoint"
     readonly volumes
 
-    echo
-    echo "Documentation will be served at the following URLs:"
-    for x in ${url_src_dst_vers}; do
-      IFS='^' read -r url _ _ <<POSIX_HERESTRING
-$x
-POSIX_HERESTRING
-
-      if [ -n "${url}" ]; then
-        if [ "${_url}" != "arbitrary" ]; then
-          echo "  ${url}"
-        fi
-      fi
-    done
-
-    echo
-    "${PODMAN}" run \
-      --env "HUGO_REFLINKSERRORLEVEL=${HUGO_REFLINKSERRORLEVEL}" \
+    IFS='' read -r cmd <<EOF
+${PODMAN} run \
+  --env=HUGO_REFLINKSERRORLEVEL=${HUGO_REFLINKSERRORLEVEL} \
   --init \
   --interactive \
-      --name "${DOCS_CONTAINER}" \
-      --platform linux/amd64 \
-      --publish "${DOCS_HOST_PORT}:3002" \
-      --publish "3003:3003" \
+  --name=${DOCS_CONTAINER} \
+  --platform=linux/amd64 \
+  --publish=${DOCS_HOST_PORT}:3002 \
+  --publish=3003:3003 \
   --rm \
   --tty \
   ${volumes} \
-      "${DOCS_IMAGE}" \
+  ${DOCS_IMAGE} \
   /entrypoint
+EOF
+    await_build http://localhost:3002 &
+
+    if [ -n "${DEBUG}" ]; then
+      ${cmd}
+    else
+      ${cmd} 2>&1| sed \
+                     -e '/Web Server is available at http:\/\/localhost:3003\/ (bind address 0.0.0.0)/ d' \
+                     -e '/^hugo server/ d' \
+                     -e '/fatal: not a git repository (or any parent up to mount point \/)/ d' \
+                     -e '/Stopping at filesystem boundary (GIT_DISCOVERY_ACROSS_FILESYSTEM not set)./ d' \
+                     -e "/Makefile:[0-9]*: warning: overriding recipe for target 'docs'/ d" \
+                     -e "/docs.mk:[0-9]*: warning: ignoring old recipe for target 'docs'/ d" \
+                     -e '/\/usr\/bin\/make -j 2 proxy hserver-docs HUGO_PORT=3003/ d' \
+                     -e '/website-proxy/ d' \
+                     -e '/rm -rf dist*/ d' \
+                     -e '/Press Ctrl+C to stop/ d' \
+                     -e '/make/ d' || echo
+    fi
     ;;
 esac