Updated Github Actions, Fixed Dockerfile

- Updated the Github Actions to build just one binary with all DB
  Backends.

- Created a hadolint workflow to check and verify Dockerfiles.
- Fixed current hadolint errors.
- Fixed a bug in the Dockerfile.j2 which prevented the correct libraries
  and tools to be installed on the Alpine images.

- Deleted travis.yml since that is not used anymore

docker/amd64/Dockerfile.alpine

@@ -74,6 +74,8 @@ ENV SSL_CERT_DIR=/etc/ssl/certs
 RUN apk add --no-cache \
         openssl \
         curl \
+        sqlite \
+        postgresql-libs \
         ca-certificates
 
 RUN mkdir /data