Support all DB's for Alpine and Debian

- Using my own rust-musl build containers we now support all database
types for both Debian and Alpine.
- Added new Alpine containers for armv6 and arm64/aarch64
- The Debian builds can also be done wihout dpkg magic stuff, probably
some fixes in Rust regarding linking (Or maybe OpenSSL or Diesel), in
any case, it works now without hacking dpkg and apt.
- Updated toolchain and crates

docker/amd64/Dockerfile.buildx

@@ -27,10 +27,9 @@
 FROM vaultwarden/web-vault@sha256:0df389deac9e83c739a1f4ff595f12f493b6c27cb4a22bb8fcaba9dc49b9b527 as vault
 
 ########################## BUILD IMAGE  ##########################
-FROM rust:1.55-buster as build
+FROM rust:1.57-buster as build
+
 
-# Debian-based builds support multidb
-ARG DB=sqlite,mysql,postgresql
 
 # Build time options to avoid dpkg warnings and help with reproducible builds.
 ENV DEBIAN_FRONTEND=noninteractive \
@@ -64,6 +63,9 @@ COPY ./rust-toolchain ./rust-toolchain
 COPY ./build.rs ./build.rs
 
 
+# Configure the DB ARG as late as possible to not invalidate the cached layers above
+ARG DB=sqlite,mysql,postgresql
+
 # Builds your dependencies and removes the
 # dummy project, except the target folder
 # This folder contains the compiled dependencies
@@ -79,6 +81,7 @@ RUN touch src/main.rs
 
 # Builds again, this time it'll just be
 # your actual source files being built
+# hadolint ignore=DL3059
 RUN --mount=type=cache,target=/root/.cargo/git --mount=type=cache,target=/root/.cargo/registry cargo build --features ${DB} --release
 
 ######################## RUNTIME IMAGE  ########################
@@ -86,9 +89,9 @@ RUN --mount=type=cache,target=/root/.cargo/git --mount=type=cache,target=/root/.
 # because we already have a binary built
 FROM debian:buster-slim
 
-ENV ROCKET_ENV "staging"
-ENV ROCKET_PORT=80
-ENV ROCKET_WORKERS=10
+ENV ROCKET_ENV="staging" \
+    ROCKET_PORT=80 \
+    ROCKET_WORKERS=10
 
 
 # Create data folder and Install needed libraries