add container and update mermaid

resources/docker-entrypoint.sh

@@ -0,0 +1,58 @@
+#!/bin/sh
+
+# Use gosu if the container started with root privileges
+UID="$(id -u)"
+[ "$UID" -eq 0 ] && GOSU="gosu hedgedoc" || GOSU=""
+
+if [ "$HMD_IMAGE_UPLOAD_TYPE" != "" ] && [ "$CMD_IMAGE_UPLOAD_TYPE" = "" ]; then
+    CMD_IMAGE_UPLOAD_TYPE="$HMD_IMAGE_UPLOAD_TYPE"
+fi
+
+# Print warning if local data storage is used but no volume is mounted
+[ "$CMD_IMAGE_UPLOAD_TYPE" = "filesystem" ] && { mountpoint -q ./public/uploads || {
+    echo "
+        #################################################################
+        ###                                                           ###
+        ###                        !!!WARNING!!!                      ###
+        ###                                                           ###
+        ###        Using local uploads without persistence is         ###
+        ###            dangerous. You'll loose your data on           ###
+        ###              container removal. Check out:                ###
+        ###  https://docs.docker.com/engine/tutorials/dockervolumes/  ###
+        ###                                                           ###
+        ###                       !!!WARNING!!!                       ###
+        ###                                                           ###
+        #################################################################
+    ";
+} ; }
+
+# Change owner and permission if filesystem backend is used and user has root permissions
+if [ "$UID" -eq 0 ] && [ "$CMD_IMAGE_UPLOAD_TYPE" = "filesystem" ]; then
+    if [ "$UID" -eq 0 ]; then
+        echo "Updating uploads directory permissions ($UPLOADS_MODE)"
+        chown -R hedgedoc ./public/uploads
+        chmod $UPLOADS_MODE ./public/uploads
+        find ./public/uploads -type f -executable -exec chmod a-x {} \;
+    else
+        echo "
+            #################################################################
+            ###                                                           ###
+            ###                        !!!WARNING!!!                      ###
+            ###                                                           ###
+            ###        Container was started without root permissions     ###
+            ###           and filesystem storage is being used.           ###
+            ###        In case of filesystem errors these need to be      ###
+            ###                      changed manually                     ###
+            ###                                                           ###
+            ###                       !!!WARNING!!!                       ###
+            ###                                                           ###
+            #################################################################
+        ";
+    fi
+fi
+
+# Sleep to make sure everything is fine...
+sleep 3
+
+# run
+exec $GOSU "$@"