Moves to own base image fork for security updates.

+ updates stack LTS

Dockerfile

@@ -3,5 +3,5 @@ WORKDIR /opt/hastatic
 ADD . .
 RUN stack install && strip /root/.local/bin/hastatic
 
-FROM fpco/haskell-scratch:integer-gmp
-COPY --from=builder /root/.local/bin/hastatic /usr/bin/hastatic
+FROM abhin4v/haskell-scratch:integer-gmp
+COPY --from=builder /root/.local/bin/hastatic /usr/bin/hastatic

stack.yaml

@@ -1,4 +1,4 @@
-resolver: lts-12.1
+resolver: lts-12.5
 
 packages:
 - .