speedup deployment with slim python image and build step outside of compose

deploy.sh

@@ -1,12 +1,20 @@
 #!/bin/bash
 # upload project to vps2
 
-rsync --progress -a docker-compose.yml vps2:docker/
-rsync --progress -a env vps2:docker/
-rsync --progress -a --delete-after helper_scripts vps2:docker/
-rsync --progress -a --delete-after nginx vps2:docker/
-rsync --progress -a --delete-after --exclude config.json.sample --exclude __pycache__ --exclude static/dyn \
-    web vps2:docker/
+host="vps2"
+
+rsync --progress -a docker-compose.yml "$host":docker/
+rsync --progress -a env "$host":docker/
+rsync --progress -a --delete-after helper_scripts "$host":docker/
+rsync --progress -a --delete-after nginx "$host":docker/
+rsync --progress -a --delete-after \
+    --exclude config.json.sample \
+    --exclude __pycache__ \
+    --exclude static/dyn \
+    web "$host":docker/
+
+ssh "$host" 'docker build -t bbilly1/lpb-air:latest docker/web'
+ssh "$host" 'docker-compose -f docker/ up -d'
 
 ##
 exit 0

docker-compose.yml

@@ -34,7 +34,7 @@ services:
       - "com.github.jrcs.letsencrypt_nginx_proxy_companion.nginx_proxy"
   # backend flask
   flask:
-    build: ./web
+    image: bbilly1/lpb-air
     container_name: flask
     restart: always
     volumes:

web/Dockerfile

@@ -1,4 +1,10 @@
-FROM python
+FROM python:3.9.7-slim-bullseye
+
+RUN apt-get clean && apt-get -y update && \
+    apt-get -y install --no-install-recommends build-essential
+
+COPY ./requirements.txt /requirements.txt
+RUN pip install --no-cache-dir -r /requirements.txt --src /usr/local/src
 
 COPY . /srv/flask_app
 WORKDIR /srv/flask_app
@@ -6,14 +12,6 @@ WORKDIR /srv/flask_app
 RUN mkdir -p static/dyn/monthly
 RUN chmod 777 -R .
 
-RUN apt-get clean && apt-get -y update
-
-RUN apt-get -y install python3-dev \
-    && apt-get -y install build-essential
-
-RUN pip install -r requirements.txt --src /usr/local/src
-
-
 RUN chmod +x ./start.sh
 
 CMD ["./start.sh"]