add .env.example file

.env.example

@@ -0,0 +1,42 @@
+# Copy this file to .env and replace the placeholders below
+
+# items marked <REDACTED> should be obtained and substituted
+# items marked <CONFIGURE> you will need to set up
+
+# secret for the asl-dev-connect keycloak OAuth client
+KEYCLOAK_SECRET=<REDACTED>
+
+# asl-resolver keycloak password
+KEYCLOAK_PASSWORD=<REDACTED>
+
+# arbitrary 32 character hex string
+TRANSPORT_KEY=<COPY_FROM_ASL-CONDUCTOR>
+
+# arbitrary 16 character hex string
+TRANSPORT_IV=<COPY_FROM_ASL-CONDUCTOR>
+
+DATABASE_NAME: asl
+DATABASE_USERNAME: postgres
+DATABASE_PASSWORD: test-password
+DATABASE_HOST: localhost
+
+SQS_REGION: eu-west-2
+SQS_ACCESS_KEY: test
+SQS_SECRET: test
+SQS_URL: http://localhost:4566/000000000000/asl-dev
+
+S3_REGION: eu-west-2
+S3_ACCESS_KEY: test
+S3_SECRET: test
+S3_BUCKET: asl-dev
+S3_LOCALSTACK_URL: http://localhost:4566
+
+KEYCLOAK_REALM: Asl-dev
+KEYCLOAK_URL: https://sso-dev.notprod.homeoffice.gov.uk/auth
+KEYCLOAK_CLIENT: asl-dev-connect
+KEYCLOAK_USERNAME: asl-resolver
+
+JWT_SECRET: conductor
+
+EMAILER_SERVICE: http://localhost:8084
+REGISTER_SERVICE: http://localhost:8080