feat: add .env.example and .gitignore for step-ca configuration

.env.example

@@ -0,0 +1,23 @@
+# PostgreSQL Configuration
+# Note: This password should also be stored in secrets/postgres_password.txt
+POSTGRES_PASSWORD=changeme
+
+# Step-CA Configuration
+# Note: Step-CA password for key encryption should be stored in secrets/step_pwd.txt
+STEP_CA_IP=127.0.0.1
+STEP_CA_PORT=9000
+STEP_CA_NAME=Default CA
+STEP_CA_ISSUER=CN=Default CA, O=Organization, C=US
+STEP_CA_DNS_NAMES=localhost,ca.local
+STEP_CA_PROVISIONER=admin
+STEP_CA_REMOTE_MANAGEMENT=true
+STEP_CA_ADMIN_SUBJECT=admin@example.com
+STEP_CA_SSH=true
+STEP_CA_ACME=true
+
+# DNS Configuration
+DNS_1=8.8.8.8
+DNS_2=8.8.4.4
+DNS_SEARCH_1=localhost
+DNS_SEARCH_2=local
+DNS_SEARCH_3=internal

.gitignore

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+.env
+step.tar
+secrets
+bun.lock
+*.ts
+first.md
+config
+node_modules
+package.json