build(ci): improved docker container building

.github/workflows/main.yml

@@ -27,7 +27,6 @@ jobs:
     - name: Build and deploy the containers
       run: |
         # stop, delete containers, delete volumes
-        docker compose down -v
         # build without cache
         docker compose build --no-cache
         docker compose up -d

docker-compose.yml

@@ -7,7 +7,6 @@ services:
       context: .
       args:
         api_port: ${api_port}
-
     ports:
       - "${api_port}:8200"
     restart: unless-stopped
@@ -18,6 +17,7 @@ services:
       context: ./ui
       args:
         api_base_url: ${api_base_url}
+        flutter_version: 3.19.3
     ports:
       # served by nginx; nginx runs on port 80 inside the docker container
       - "${ui_port}:80"

ui/Dockerfile

@@ -1,24 +1,6 @@
-# Environemnt to install flutter and build web
-FROM debian:latest AS build-env
+ARG flutter_version
 
-# install all needed stuff
-RUN apt-get update
-RUN apt-get install -y curl git unzip
-
-# define variables
-ARG FLUTTER_SDK=/usr/local/flutter
-ARG FLUTTER_VERSION=3.19.3
-ARG api_base_url
-
-#clone flutter
-ENV GIT_HTTP_LOW_SPEED_LIMIT=1000
-ENV GIT_HTTP_LOW_SPEED_TIME=60
-RUN git clone https://github.com/flutter/flutter.git $FLUTTER_SDK
-# change dir to current flutter folder and make a checkout to the specific version
-RUN cd $FLUTTER_SDK && git fetch && git checkout $FLUTTER_VERSION
-
-# setup the flutter path as an enviromental variable
-ENV PATH="$FLUTTER_SDK/bin:$FLUTTER_SDK/bin/cache/dart-sdk/bin:${PATH}"
+FROM ghcr.io/cirruslabs/flutter:${flutter_version} AS build-env
 
 # Start to run Flutter commands
 # doctor to see if all was installes ok
@@ -27,6 +9,7 @@ RUN flutter doctor -v
 # stup new folder as the working directory
 ENV WORKDIR=/doculaboration
 WORKDIR $WORKDIR
+
 # copy source code to folder
 COPY . .