Update environment variables and login credentials

.github/workflows/main.yaml

@@ -3,7 +3,7 @@ on: push
 env: # Set the secret as an input
   docker_username: ${{ github.actor }}
   docker_password: ${{ secrets.GITHUB_TOKEN }}
-  GIT_COMMIT: "${{ github.sha }} ::8"
+  GIT_COMMIT: ${{ github.sha }}
 jobs:
   Build:
     runs-on: ubuntu-latest

ci/build-docker.sh

@@ -1,5 +1,5 @@
 #!/bin/bash
 [[ -z "${GIT_COMMIT}" ]] && Tag='local' || Tag="${GIT_COMMIT::8}" 
-REPO="ghcr.io/$github.actor/"
+REPO="ghcr.io/$GITHUB_ACTOR/"
 echo "${REPO}"
 docker build -t "${REPO}micronaut-app:latest" -t "${REPO}micronaut-app:1.0-$Tag" app/

ci/push-docker.sh

@@ -1,5 +1,5 @@
 #!/bin/bash
-echo "$secrets.GITHUB_TOKEN" | docker login ghcr.io --username "${{ github.actor }}" --password-stdin
+echo "$secrets.GITHUB_TOKEN" | docker login ghcr.io --username "$GITHUB_ACTOR" --password-stdin
 docker push "ghcr.io/$docker_username/micronaut-app:1.0-${GIT_COMMIT::8}" 
 docker push "ghcr.io/$docker_username/micronaut-app:latest" &
 wait