knowledge_base:programming:docker

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knowledge_base:programming:docker [2024/10/07 14:37] – [Dash App Code] Normal Userknowledge_base:programming:docker [2025/03/01 22:42] (current) – [Create Dockerfile] Normal User
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 Tip: use ''.gitignore'' and ''.dockerignore'' file to exclude files you don't need Tip: use ''.gitignore'' and ''.dockerignore'' file to exclude files you don't need
  
 +[3/1/2025] - need to modify stock_info.py in the yahoo_fin package to fix data retrieving issue since Feb. 2025. Also need gcc for building Python Wheels
 +<code>
 +FROM python:3.12-slim
 +RUN apt-get update && apt-get install -y libpq-dev gcc
 +WORKDIR /app
 +COPY . /app
 +RUN pip install -U pip && pip install -r requirements.txt
 +ADD stock_info.py /usr/local/lib/python3.12/site-packages/yahoo_fin/
 +EXPOSE 8050
 +CMD ["python", "./indicators.py"]
 +</code>
 ===== Build, Test and Push ===== ===== Build, Test and Push =====
  
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 How to debug: Look at SSO Server Log for hints. How to debug: Look at SSO Server Log for hints.
  
-Had to add a local DNS entry for URL to point to local server IP address because I do not want to expose my local server login port to the outside world.+==== Tips for Hosting Docker Image on Synology ==== 
 + 
 +=== Import Docker Image Tarball === 
 + 
 +After building the docker image and save as tarball, it can be imported to Synology docker using GUI or CLI's ''import'' function. To check the docker image is properly imported, use the following command to check 
 +<code> 
 +docker image ls 
 +</code> 
 + 
 +=== Running Image with Docker Compose YML === 
 +The method described here does NOT work. Reason being javascript based (Dash, Flask are all javascript based) programs are run on the client side. The SSO server thus must be accessible on the internet. 
 + 
 +The important thing here is ''extra_hosts''. We're running everything locally so we need to take care of several things: 
 +  * To access the host IP address, we really need to use the sham IP address. Please see explanation [[https://isolo.org/dokuwiki/knowledge_base/home_it/synology/synology_docker?s[]=shim#allowing_hostdocker_access|here]] 
 +  * SSO will reject authorization request if the well known server URL does not match its valid certificate. So we must use a valid A record such as ''https://www.isolo.org:5008/webman/sso/.well-known/openid-configuration''. However, we don't want to open the port to external world (this will be handled by reverse proxy), and we don't need to due to the fact the the docker container is running locally as well. The solution is to add a local DNS record in the docker OS /etc/hosts file to route www.isolo.org to the local server using ''extra_hosts:'' directive. 
 +<code> 
 +version: "3" 
 + 
 +services: 
 +  server: 
 +    container_name: stockdash 
 +    image: georgewayne188/stock_dashboard:latest 
 +    extra_hosts: 
 +      - www.isolo.org:192.168.11.23 
 +    environment: 
 +      - USER_UID=1000 
 +      - USER_GID=1000 
 +    ports: 
 +      - "8058:8050" 
 +    restart: unless-stopped 
 +</code> 
 +In developing phase while working on a Windows machine, had to add a local DNS entry in my Pihole DNS server for the URL to point to local server IP address. The entire project is [[https://gitea.isolo.org/public/StockChartingDash|here]] 
 + 
 + 
 +=== get_data in yahoo_fin.stock_info not working ===
  
 +https://stackoverflow.com/questions/79453269/get-data-in-yahoo-fin-stock-info-not-working
  
  • Last modified: 2024/10/07 14:37
  • by Normal User