Do not use a variable for app port, because the port is hardcoded in the Golang code

Author: miguno

.env

@@ -14,4 +14,3 @@ PROJECT_VERSION="1.0.0-alpha"
 # Docker-related settings
 DOCKER_IMAGE_NAME="miguno/golang-docker-build-tutorial"
 DOCKER_IMAGE_TAG="latest"
-DOCKER_APP_PORT="8123"

start_container.sh

@@ -8,6 +8,6 @@ set -uo pipefail
 # Import environment variables from .env
 set -o allexport && source .env && set +o allexport
 
-echo "Starting container for image '$DOCKER_IMAGE_NAME:$DOCKER_IMAGE_TAG', exposing port $DOCKER_APP_PORT/tcp"
-docker run -p "$DOCKER_APP_PORT":"$DOCKER_APP_PORT" "$DOCKER_IMAGE_NAME":"$DOCKER_IMAGE_TAG"
+echo "Starting container for image '$DOCKER_IMAGE_NAME:$DOCKER_IMAGE_TAG', exposing port 8123/tcp"
+docker run -p 8123:8123 "$DOCKER_IMAGE_NAME":"$DOCKER_IMAGE_TAG"