Move Alpine Dockerfile to separate file

Dockerfile

@@ -25,11 +25,19 @@ RUN npm run dist \
     && mv build /web-vault
 
 ########################## BUILD IMAGE  ##########################
-# Musl build image for statically compiled binary
-FROM clux/muslrust:nightly-2018-08-24 as build
+# We need to use the Rust build image, because
+# we need the Rust compiler and Cargo tooling
+FROM rust as build
+
+# Using bundled SQLite, no need to install it
+# RUN apt-get update && apt-get install -y\
+#    sqlite3\
+#    --no-install-recommends\
+# && rm -rf /var/lib/apt/lists/*
 
 # Creates a dummy project used to grab dependencies
-RUN USER=root cargo init --bin
+RUN USER=root cargo new --bin app
+WORKDIR /app
 
 # Copies over *only* your manifests and vendored dependencies
 COPY ./Cargo.* ./
@@ -53,17 +61,17 @@ RUN cargo build --release
 ######################## RUNTIME IMAGE  ########################
 # Create a new stage with a minimal image
 # because we already have a binary built
-FROM alpine:3.8
+FROM debian:stretch-slim
 
 ENV ROCKET_ENV "staging"
 ENV ROCKET_WORKERS=10
-ENV SSL_CERT_DIR=/etc/ssl/certs
 
 # Install needed libraries
-RUN apk add \
-        openssl\
-        ca-certificates \
-    && rm /var/cache/apk/*
+RUN apt-get update && apt-get install -y\
+    openssl\
+    ca-certificates\
+    --no-install-recommends\
+ && rm -rf /var/lib/apt/lists/*
 
 RUN mkdir /data
 VOLUME /data
@@ -74,7 +82,7 @@ EXPOSE 80
 COPY .env .
 COPY Rocket.toml .
 COPY --from=vault /web-vault ./web-vault
-COPY --from=build /volume/target/x86_64-unknown-linux-musl/release/bitwarden_rs .
+COPY --from=build app/target/release/bitwarden_rs .
 
 # Configures the startup!
 CMD ./bitwarden_rs