Docker container cannot connect to host machine: No route to host

I've been trying to setup a docker environment using docker compose. One issue that has me stumped is that my docker containers cannot reach my host machine. I setup a container using the following compose file: ``` version: '3' services: webapp: image: ... ports: - "8080:8080" ``` When I enter the container, I am able to ping my host machine: ``` ping ${dockerHostIP} ``` However when I try and retrieve the home page using curl inside the container: ``` curl http://${dockerHostIP}:8080 ``` I get: ``` curl: (7) Failed connect to ${dockerHostIP}:8080; No route to host ``` I cannot figure out what should be done to resolve this No route to host error. Unfortunately I need to be able to do this as the web application makes requests using its hostname internally. Traceroute Results: ``` traceroute ${dockerHostIP} traceroute to ${dockerHostIP} (${dockerHostIP}), 30 hops max, 60 byte packets 1 ${dockerHostName} (${dockerHostIP}) 0.039 ms !X 0.012 ms !X 0.007 ms !X ```