Add memray to the swh-counters container

Ref. sysadm-environment#5259

apps/swh-counters/Dockerfile

@@ -16,6 +16,8 @@ COPY --chown=swh:swh requirements-frozen.txt /opt/swh
 
 ENV PYTHONPATH=/opt/swh
 ENV PATH=/opt/swh/.local/bin:$PATH
+ENV MEMRAY_ENABLED=false
+ENV MEMRAY_OPTIONS=
 
 RUN /usr/local/bin/python -m pip install --upgrade pip && \
     pip install --no-cache-dir -r requirements-frozen.txt && \

apps/swh-counters/entrypoint.sh

@@ -13,8 +13,21 @@ case "$1" in
         ;;
     "swh")
         shift
-        echo "Running swh command $@"
-        exec swh $@
+        declare -a cmd
+
+        if [ "${MEMRAY_ENABLED}" = "true" ]; then
+            # we expect MEMRAY_OPTIONS to contain quoted values
+            # shellcheck disable=SC2206
+            cmd=(memray run --native ${MEMRAY_OPTIONS})
+            if [ -n "${MEMRAY_LIVE_REMOTE_PORT}" ]; then
+                cmd+=(--live-remote --live-port="${MEMRAY_LIVE_REMOTE_PORT}")
+            fi
+        fi
+
+        cmd+=(swh "$@")
+
+        set -x
+        exec "${cmd[@]}"
         ;;
     *)
         echo Starting the swh-search API server

apps/swh-counters/requirements.txt

+memray
 swh.counters