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scripts/validate_input.sh

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+#!/bin/bash
+# Script: validate_input.sh
+# Description: Validates prerequisites and input parameters for building and pushing a Docker image.
+# This script ensures that Docker, Docker Buildx, and input variables (architectures, tags, image name, registry URL)
+# meet the required criteria. If any check fails, the script provides informative error messages and exits.
+
+# Exit immediately if a command exits with a non-zero status.
+set -e
+
+echo "============================================"
+echo "Starting Validation Script"
+echo "============================================"
+
+# ---------------------------- Docker Installation --------------------------- #
+echo "🔍 Checking Docker installation..."
+if docker --version >/dev/null 2>&1; then
+    DOCKER_VERSION=$(docker --version)
+    echo "✅ Docker is installed: $DOCKER_VERSION"
+else
+    echo "❌ Docker is not installed."
+    echo "ℹ️ Please install Docker from: https://docs.docker.com/get-docker/"
+    exit 1
+fi
+
+# ---------------------------- Buildx Installation --------------------------- #
+echo "🔍 Checking Docker Buildx installation..."
+if docker buildx version >/dev/null 2>&1; then
+    BUILDX_VERSION=$(docker buildx version)
+    echo "✅ Docker Buildx is installed: $BUILDX_VERSION"
+else
+    echo "❌ Docker Buildx is not installed."
+    echo "ℹ️ Please install Docker Buildx. See: https://docs.docker.com/buildx/working-with-buildx/"
+    exit 1
+fi
+
+# ---------------------------- Validate Architectures --------------------------- #
+echo "🔍 Validating architectures..."
+for arch in $ARCHITECTURES; do
+    echo "→ Checking architecture: $arch"
+    if [[ $VALID_ARCHITECTURES != *"$arch"* ]]; then
+        echo "❌ Invalid architecture detected: $arch"
+        echo "ℹ️ Allowed architectures are: $VALID_ARCHITECTURES"
+        exit 1
+    fi
+done
+echo "✅ All specified architectures are valid."
+
+# ---------------------------- Validate Tags --------------------------- #
+echo "🔍 Validating tags..."
+
+# Ensure tags are lowercase.
+if sh ./ensure_lowercase.sh "Tag" $TAGS; then
+    echo "✅ All tags are lowercase."
+else
+    echo "❌ One or more tags are not lowercase. Please update the tags."
+    exit 1
+fi
+
+# Ensure tags do not contain spaces.
+if sh ./ensure_no_spaces.sh "Tag" $TAGS; then
+    echo "✅ Tags do not contain spaces."
+else
+    echo "❌ One or more tags contain spaces. Please update the tags."
+    exit 1
+fi
+
+# ---------------------------- Validate Image Name --------------------------- #
+if [ "$NAME" != "auto" ]; then
+    echo "🔍 Validating image name..."
+    # Ensure image name is lowercase.
+    if sh ./ensure_lowercase.sh "Name" $NAME; then
+        echo "✅ Image name is lowercase."
+    else
+        echo "❌ Image name is not lowercase. Please update the name."
+        exit 1
+    fi
+
+    # Ensure image name does not contain spaces.
+    if sh ./ensure_no_spaces.sh "Name" $NAME; then
+        echo "✅ Image name does not contain spaces."
+    else
+        echo "❌ Image name contains spaces. Please update the name."
+        exit 1
+    fi
+else
+    echo "ℹ️ Image name is set to auto-detect."
+fi
+
+# ---------------------------- Validate Registry URL --------------------------- #
+echo "🔍 Validating Registry URL..."
+# Ensure Registry URL does not contain spaces.
+if sh ./ensure_no_spaces.sh "Registry URL" $REGISTRY_URL; then
+    echo "✅ Registry URL does not contain spaces."
+else
+    echo "❌ Registry URL contains spaces. Please update the URL."
+    exit 1
+fi
+
+# Ensure Registry URL is lowercase.
+if sh ./ensure_lowercase.sh "Registry URL" $REGISTRY_URL; then
+    echo "✅ Registry URL is lowercase."
+else
+    echo "❌ Registry URL is not lowercase. Please update the URL."
+    exit 1
+fi
+
+# Ensure Registry URL starts with "https://"
+if [[ $REGISTRY_URL != https://* ]]; then
+    echo "❌ Invalid Registry URL: $REGISTRY_URL"
+    echo "ℹ️ Registry URL must start with 'https://'"
+    exit 1
+fi
+echo "✅ Registry URL starts with 'https://'"
+
+# Check if Registry URL is reachable.
+echo "🔍 Checking if Registry URL is reachable..."
+if curl -s --head "$REGISTRY_URL" | head -n 1 | grep "HTTP/[12]\.[0-9] [23].." >/dev/null; then
+    echo "✅ Registry URL is reachable: $REGISTRY_URL"
+else
+    echo "❌ Registry URL is not reachable: $REGISTRY_URL"
+    echo "ℹ️ Please verify the URL and check your network connection."
+    exit 1
+fi
+
+echo "============================================"
+echo "All validations passed successfully!"
+echo "============================================"