cd ~/Dokumenti/scripts/Fitnes-tracker

# Stop the container
docker compose down

# Create the folder if it doesn't exist (safe to run even if it exists)
mkdir -p fitness-data

# Make sure container user (uid 1000) can write there
sudo chown -R 1000:1000 fitness-data
sudo chmod 775 fitness-data

# Start again
docker compose up


Fitness Tracker – Self-Hosted 5×5 Powerlifting App

A minimal self-hosted fitness tracker built in Go.
Includes:

Workout logging with start/finish

A/B templates (StrongLifts style)

Automatic rest-time tracking

Volume tracking (today/week/month)

SQLite database

Fully Dockerized (with UID/GID support)

External fitness.db mounted to host

This app is designed to be simple, private, and fast, perfect for home servers or local use.

📁 Project Structure
Fitnes-tracker/
│── main.go
│── go.mod
│── Dockerfile
│── docker-compose.yml
│── readme.md
│── fitness-data/          # External volume (database lives here)
│    └── fitness.db

🔥 1. Running Locally (Development Mode)
Install Go

Ubuntu / Debian:

sudo apt update
sudo apt install -y golang-go


Verify:

go version

Run the app

Inside the project folder:

cd Fitnes-tracker
DATABASE_URL=./fitness.db go run main.go


Open in browser:

👉 http://localhost:8080

Local DB file will be created as:

./fitness.db

🐳 2. Running with Docker (Recommended)

Make sure Docker + docker-compose are installed:

sudo apt install -y docker.io docker-compose-plugin
sudo usermod -aG docker $USER
newgrp docker

Create external DB directory
mkdir -p fitness-data

Fix permissions so container user (UID 1000) can write
sudo chown -R 1000:1000 fitness-data
sudo chmod 775 fitness-data

Build the Docker image
docker compose build

Start the app
docker compose up -d


Check logs:

docker compose logs -f


You should see:

Using database file: /data/fitness.db
Listening on :8080 ...


Open:

👉 http://localhost:8080

🔧 3. Docker Compose Explained

Your docker-compose.yml:

services:
  fitness:
    build: .
    container_name: fitness-tracker
    restart: unless-stopped
    environment:
      - DATABASE_URL=/data/fitness.db
    volumes:
      - ./fitness-data:/data
    ports:
      - "8080:8080"

What it does:

Mounts ./fitness-data → /data inside container

SQLite DB stored on host: fitness-data/fitness.db

App always restarts unless manually stopped

Binds port 8080 (browser UI)

👤 4. Running container as UID 1000:1000

The app inside the container runs as a regular Linux user (not root).
This avoids permission issues and is safer.

To check container UID/GID:

docker exec -it fitness-tracker id


Expected output:

uid=1000(appuser) gid=1000(appuser)


If permissions are wrong, fix host directory:

sudo chown -R 1000:1000 fitness-data
sudo chmod 775 fitness-data

📦 5. Rebuilding & Updating

Whenever you modify Go code:

docker compose build
docker compose up -d


If you want to clean old images:

docker system prune -f

📤 6. Production Setup (Traefik Support)

To put behind Traefik:

Add labels inside docker-compose.yml:

labels:
  - "traefik.enable=true"
  - "traefik.http.routers.fitness.rule=Host(`fitness.rozic-dev.com`)"
  - "traefik.http.routers.fitness.entrypoints=websecure"
  - "traefik.http.routers.fitness.tls.certresolver=letsencrypt"
  - "traefik.http.services.fitness.loadbalancer.server.port=8080"
networks:
  - traefik_default

💾 7. Backup

Just back up the fitness-data/ folder:

cp -r fitness-data fitness-data-backup


Or tar it:

tar -czvf fitness-backup.tar.gz fitness-data/

📚 8. Git Instructions
Set your identity once:
git config --global user.name "Dejan R."
git config --global user.email "dejan@example.com"

Useful Commands
git add .
git commit -m "update"
git push

.gitignore (already included)
*.db
fitness-data/


DB files will never pollute your git history.