Added Dockerfiles to main repo (#225)

* Added Dockerfiles

Dockerfile

@@ -0,0 +1,44 @@
+#This Dockerfile pulls the latest git commit and builds Kavita from source
+FROM mcr.microsoft.com/dotnet/sdk:5.0-focal AS builder
+
+MAINTAINER Chris P
+
+ENV DEBIAN_FRONTEND=noninteractive
+ARG TARGETPLATFORM
+
+#Installs nodejs and npm
+RUN curl -fsSL https://deb.nodesource.com/setup_14.x | bash - \
+  && apt-get install -y nodejs \
+  && rm -rf /var/lib/apt/lists/*
+
+#Builds app based on platform
+COPY build_target.sh /build_target.sh
+RUN /build_target.sh
+
+#Production image
+FROM ubuntu:focal
+
+MAINTAINER Chris P
+
+#Move the output files to where they need to be
+COPY --from=builder /Projects/Kavita/_output/build/Kavita /kavita
+
+#Installs program dependencies
+RUN apt-get update \
+  && apt-get install -y libicu-dev libssl1.1 pwgen \
+  && rm -rf /var/lib/apt/lists/*
+
+#Creates the manga storage directory
+RUN mkdir /manga /kavita/data
+
+RUN cp /kavita/appsettings.Development.json /kavita/appsettings.json \
+  && sed -i 's/Data source=kavita.db/Data source=data\/kavita.db/g' /kavita/appsettings.json
+
+COPY entrypoint.sh /entrypoint.sh
+
+EXPOSE 5000
+
+WORKDIR /kavita
+
+ENTRYPOINT ["/bin/bash"]
+CMD ["/entrypoint.sh"]