Bring back missing script "deploy-validator.sh" (#3750)

## Motivation

was accidentally deleted by #3602

## Proposal

bring it back + remove pyroscope data

## Test Plan

yolo

Author: ma2bd

scripts/deploy-validator.sh

@@ -0,0 +1,114 @@
+#!/bin/bash
+
+set -e
+
+# Make sure we're at the source of the repo.
+cd "$(dirname "${BASH_SOURCE[0]}")/.."
+
+# Function to check if a command exists
+command_exists() {
+    command -v "$1" >/dev/null 2>&1
+}
+
+docker_compose_plugin_installed() {
+    docker compose version >/dev/null 2>&1
+}
+
+if ! command_exists docker; then
+    echo "Error: Docker is not installed. Please install Docker before running this script."
+    exit 1
+fi
+
+if ! docker_compose_plugin_installed; then
+    echo "Error: Docker Compose is not installed. Please install Docker Compose before running this script."
+    exit 1
+fi
+
+HOST=$1
+
+# Check if the host is provided as an argument
+if [ -z "$HOST" ]; then
+  echo "Usage: $0 <host> [--remote-image]"
+  exit 1
+fi
+
+if [ -n "$2" ]; then
+  if [ "$2" != "--remote-image" ]; then
+    echo "Usage: $0 <host> [--remote-image]"
+    exit 1
+  fi
+  REMOTE_IMAGE="$2"
+fi
+
+# Get the current branch name and replace underscores with dashes
+BRANCH_NAME=$(git rev-parse --abbrev-ref HEAD)
+FORMATTED_BRANCH_NAME="${BRANCH_NAME//_/-}"
+GIT_COMMIT=$(git rev-parse --short HEAD)
+
+# Variables
+PORT="19100"
+METRICS_PORT="21100"
+GENESIS_URL="https://storage.googleapis.com/linera-io-dev-public/$FORMATTED_BRANCH_NAME/genesis.json"
+VALIDATOR_CONFIG="docker/validator-config.toml"
+GENESIS_CONFIG="docker/genesis.json"
+
+if [ -z "$REMOTE_IMAGE" ]; then
+  echo "Building local image from commit $GIT_COMMIT..."
+  docker build --build-arg git_commit="$GIT_COMMIT" -f  docker/Dockerfile . -t linera
+  export LINERA_IMAGE=linera
+else
+  export LINERA_IMAGE="us-docker.pkg.dev/linera-io-dev/linera-public-registry/linera:${BRANCH_NAME}_release"
+  echo "Using remote image $LINERA_IMAGE..."
+fi
+
+# Create validator configuration file
+echo "Creating validator configuration..."
+cat > $VALIDATOR_CONFIG <<EOL
+server_config_path = "server.json"
+host = "$HOST"
+port = $PORT
+metrics_port = $METRICS_PORT
+internal_host = "proxy"
+internal_port = 20100
+[external_protocol]
+Grpc = "ClearText"
+[internal_protocol]
+Grpc = "ClearText"
+
+[[shards]]
+host = "docker-shard-1"
+port = $PORT
+metrics_port = $METRICS_PORT
+
+[[shards]]
+host = "docker-shard-2"
+port = $PORT
+metrics_port = $METRICS_PORT
+
+[[shards]]
+host = "docker-shard-3"
+port = $PORT
+metrics_port = $METRICS_PORT
+
+[[shards]]
+host = "docker-shard-4"
+port = $PORT
+metrics_port = $METRICS_PORT
+EOL
+
+# Download genesis configuration
+echo "Downloading genesis configuration..."
+wget -O $GENESIS_CONFIG $GENESIS_URL
+
+cd docker
+
+# Generate validator keys
+echo "Generating validator keys..."
+PUBLIC_KEY=$(docker run --rm -v "$(pwd):/config" -w /config $LINERA_IMAGE /linera-server generate --validators validator-config.toml)
+
+echo "Validator setup completed successfully."
+echo "Starting docker compose..."
+
+docker compose up --wait
+
+echo "Public Key: $PUBLIC_KEY"