fix: fix dockerfile build

api/.dockerignore

@@ -1,2 +1,3 @@
 .stack-work
 dist-newstyle
+Dockerfile

api/Dockerfile

@@ -1,9 +1,10 @@
 FROM haskell:8
 
 WORKDIR /opt/aeris
+RUN apt-get update && apt-get install -y postgresql postgresql-contrib libpq-dev
 RUN cabal update
 COPY ./aeris.cabal /opt/aeris/aeris.cabal
 RUN cabal build --only-dependencies -j4
 COPY . /opt/aeris
 RUN cabal install
-CMD aeris
+CMD aeris-exe