Fix docker compilation failed

Dockerfile

@@ -1,5 +1,5 @@
-FROM node:14-slim as builder
-RUN apt-get update && apt-get install -y jq curl wget python
+FROM node:18-slim as builder
+RUN apt-get update && apt-get install -y jq curl wget python3
 WORKDIR /app
 
 ### Get the latest release source code tarball
@@ -13,7 +13,8 @@ RUN yarn --network-timeout 1000000
 
 ### Separate `yarn build` layer as a workaround for devices with low RAM.
 ### If build fails due to OOM, `yarn install` layer will be already cached.
-RUN yarn build
+RUN yarn \
+    && yarn build
 
 ### Nginx or Apache can also be used, Caddy is just smaller in size
 FROM caddy:latest