Create Dockerfiles for mysql builds

docker/armv7/mysql/Dockerfile

@@ -0,0 +1,98 @@
+# Using multistage build: 
+# 	https://docs.docker.com/develop/develop-images/multistage-build/
+# 	https://whitfin.io/speeding-up-rust-docker-builds/
+####################### VAULT BUILD IMAGE  #######################
+FROM alpine as vault
+
+ENV VAULT_VERSION "v2.10.1"
+
+ENV URL "https://github.com/dani-garcia/bw_web_builds/releases/download/$VAULT_VERSION/bw_web_$VAULT_VERSION.tar.gz"
+
+RUN apk add --update-cache --upgrade \
+    curl \
+    tar
+
+RUN mkdir /web-vault
+WORKDIR /web-vault
+
+RUN curl -L $URL | tar xz
+RUN ls
+
+########################## BUILD IMAGE  ##########################
+# We need to use the Rust build image, because
+# we need the Rust compiler and Cargo tooling
+FROM rust as build
+
+# set mysql backend
+ARG DB=mysql
+
+RUN apt-get update \
+    && apt-get install -y \
+        gcc-arm-linux-gnueabihf \
+    && mkdir -p ~/.cargo \
+    && echo '[target.armv7-unknown-linux-gnueabihf]' >> ~/.cargo/config \
+    && echo 'linker = "arm-linux-gnueabihf-gcc"' >> ~/.cargo/config
+
+ENV CARGO_HOME "/root/.cargo"
+ENV USER "root"
+
+WORKDIR /app
+
+# Prepare openssl armhf libs
+RUN sed 's/^deb/deb-src/' /etc/apt/sources.list > \
+        /etc/apt/sources.list.d/deb-src.list \
+    && dpkg --add-architecture armhf \
+    && apt-get update \
+    && apt-get install -y \
+        libssl-dev:armhf \
+        libc6-dev:armhf \
+        libmariadb-dev:armhf
+
+
+ENV CC_armv7_unknown_linux_gnueabihf="/usr/bin/arm-linux-gnueabihf-gcc"
+ENV CROSS_COMPILE="1"
+ENV OPENSSL_INCLUDE_DIR="/usr/include/arm-linux-gnueabihf"
+ENV OPENSSL_LIB_DIR="/usr/lib/arm-linux-gnueabihf"
+
+# Copies the complete project
+# To avoid copying unneeded files, use .dockerignore
+COPY . .
+
+# Build
+RUN rustup target add armv7-unknown-linux-gnueabihf
+RUN cargo build --features ${DB} --release --target=armv7-unknown-linux-gnueabihf -v
+
+######################## RUNTIME IMAGE  ########################
+# Create a new stage with a minimal image
+# because we already have a binary built
+FROM balenalib/armv7hf-debian:stretch
+
+ENV ROCKET_ENV "staging"
+ENV ROCKET_PORT=80
+ENV ROCKET_WORKERS=10
+
+RUN [ "cross-build-start" ]
+
+# Install needed libraries
+RUN apt-get update && apt-get install -y\
+    openssl\
+    ca-certificates\
+    libmariadbclient-dev\
+    --no-install-recommends\
+ && rm -rf /var/lib/apt/lists/*
+
+RUN mkdir /data
+
+RUN [ "cross-build-end" ]  
+
+VOLUME /data
+EXPOSE 80
+
+# Copies the files from the context (Rocket.toml file and web-vault)
+# and the binary from the "build" stage to the current stage
+COPY Rocket.toml .
+COPY --from=vault /web-vault ./web-vault
+COPY --from=build /app/target/armv7-unknown-linux-gnueabihf/release/bitwarden_rs .
+
+# Configures the startup!
+CMD ./bitwarden_rs