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.