change to node:14-bullseye-slim, and reduce the docker image size

dockerfile

@@ -1,26 +1,32 @@
-FROM node:14-bullseye-slim AS release
+# DON'T UPDATE TO node:14-bullseye-slim, see #372.
+FROM node:14-buster-slim AS build
 WORKDIR /app
 
-# install dependencies
-RUN apt update && apt --yes install python3 python3-pip python3-dev git g++ make iputils-ping
-RUN ln -s /usr/bin/python3 /usr/bin/python
-
 # split the sqlite install here, so that it can caches the arm prebuilt
-RUN npm install mapbox/node-sqlite3#593c9d
+# do not modify it, since we don't want to re-compile the arm prebuilt again
+RUN apt update && \
+            apt --yes install python3 python3-pip python3-dev git g++ make && \
+            ln -s /usr/bin/python3 /usr/bin/python && \
+            npm install mapbox/node-sqlite3#593c9d  --build-from-source
 
-# Install apprise
-RUN apt --yes install python3-cryptography python3-six python3-yaml python3-click python3-markdown python3-requests python3-requests-oauthlib
-RUN pip3 --no-cache-dir install apprise && \
-    rm -rf /root/.cache
+COPY . .
+RUN npm install --legacy-peer-deps && npm run build && npm prune --production
 
-# additional package should be added here, since we don't want to re-compile the arm prebuilt again
+FROM node:14-bullseye-slim AS release
+WORKDIR /app
 
+# Install Apprise,
 # add sqlite3 cli for debugging in the future
-RUN apt --yes install sqlite3
-
-
-COPY . .
-RUN npm install --legacy-peer-deps && npm run build && npm prune
+# iputils-ping for ping
+RUN apt update && \
+            apt --yes install python3 python3-pip python3-cryptography python3-six python3-yaml python3-click python3-markdown python3-requests python3-requests-oauthlib \
+                sqlite3 \
+                iputils-ping && \
+            pip3 --no-cache-dir install apprise && \
+            rm -rf /var/lib/apt/lists/*
+
+# Copy app files from build layer
+COPY  --from=build /app /app
 
 EXPOSE 3001
 VOLUME ["/app/data"]

dockerfile-alpine

@@ -1,5 +1,5 @@
 # DON'T UPDATE TO alpine3.13, 1.14, see #41.
-FROM node:14-alpine3.12 AS release
+FROM node:14-alpine3.12 AS build
 WORKDIR /app
 
 # split the sqlite install here, so that it can caches the arm prebuilt
@@ -9,13 +9,20 @@ RUN apk add --no-cache --virtual .build-deps make g++ python3 python3-dev git &&
             apk del .build-deps && \
             rm -f /usr/bin/python
 
+COPY . .
+RUN npm install --legacy-peer-deps && npm run build && npm prune --production
+
+
+FROM node:14-alpine3.12 AS release
+WORKDIR /app
+
 # Install apprise
-RUN apk add --no-cache python3 py3-cryptography py3-pip py3-six py3-yaml py3-click py3-markdown py3-requests py3-requests-oauthlib
-RUN pip3 --no-cache-dir install apprise && \
+RUN apk add --no-cache python3 py3-cryptography py3-pip py3-six py3-yaml py3-click py3-markdown py3-requests py3-requests-oauthlib && \
+            pip3 --no-cache-dir install apprise && \
             rm -rf /root/.cache
 
-COPY . .
-RUN npm install --legacy-peer-deps && npm run build && npm prune
+# Copy app files from build layer
+COPY  --from=build /app /app
 
 EXPOSE 3001
 VOLUME ["/app/data"]