Safer docker login and fails on any command in travis

.dockerignore

@@ -1,6 +1,4 @@
 .git
-.travis.yml
 readme
-tun.sh
-docker-compose.yml
-README.md
+*.yml
+*.md

.travis.yml

@@ -16,9 +16,10 @@ env:
       BASE_IMAGE=arm64v8/alpine
       TARGET_IMAGE=${DOCKER_BUILD}:${ARCH}
 script:
-  - docker login -u "$DOCKER_USERNAME" -p "$DOCKER_PASSWORD"
+  - set -e
+  - echo "$DOCKER_PASSWORD" | docker login -u qmcgaw --password-stdin
   - docker run --rm --privileged multiarch/qemu-user-static:register --reset
   - docker build -t ${TARGET_IMAGE} --build-arg BASE_IMAGE=${BASE_IMAGE} --build-arg VCF=${TRAVIS_COMMIT} --build-arg BUILD_DATE="$(date -u +"%Y-%m-%dT%H:%M:%SZ")" .
   - '[ "${TRAVIS_PULL_REQUEST}" = "false" ] && docker push ${DOCKER_BUILD} || false'
-after_script:
-  - "curl -X POST https://hooks.microbadger.com/images/${DOCKER_BUILD}/${MICROBADGER_CODE}"
+  - "curl -X POST https://hooks.microbadger.com/images/${DOCKER_BUILD}/${MICROBADGER_CODE}"
+