Update Docker image

Signed-off-by: Florentin Dubois <florentin.dubois@clever-cloud.com>

.dockerignore

@@ -1,11 +1,2 @@
 .git
-.gitignore
-.travis.yml
 target
-LICENSE
-README.md
-doc
-CONTRIBUTING.md
-bin/command_folder
-os-build
-!os-build/docker

Dockerfile

@@ -1,4 +1,5 @@
 ARG ALPINE_VERSION=edge
+
 FROM alpine:$ALPINE_VERSION as builder
 
 RUN apk update && apk add --no-cache --virtual .build-dependencies \
@@ -7,15 +8,18 @@ RUN apk update && apk add --no-cache --virtual .build-dependencies \
   file \
   libgcc \
   musl-dev \
-  protobuf protobuf-dev \
+  protobuf \
+  protobuf-dev \
   rust
-RUN apk add --no-cache openssl-dev \
-  llvm-libunwind \
+
+RUN apk add --no-cache llvm-libunwind \
   pkgconfig
 
-COPY . /source/
-WORKDIR /source/bin
-RUN cargo build --release --locked
+COPY . /usr/src/sozu
+WORKDIR /usr/src/sozu
+
+RUN cargo vendor --locked
+RUN cargo build --release --frozen
 
 FROM alpine:$ALPINE_VERSION as bin
 
@@ -25,15 +29,15 @@ EXPOSE 443
 VOLUME /etc/sozu
 VOLUME /run/sozu
 
-RUN mkdir /var/lib/sozu
+RUN mkdir -p /var/lib/sozu
 
 RUN apk update && apk add --no-cache \
   llvm-libunwind \
   libgcc \
   ca-certificates
 
-COPY --from=builder /source/target/release/sozu /usr/local/bin/sozu
-COPY os-build/docker/config.toml /etc/sozu/config.toml
+COPY --from=builder /usr/src/sozu/target/release/sozu /usr/local/bin/sozu
+COPY os-build/config.toml /etc/sozu/config.toml
 COPY lib/assets/404.html /etc/sozu/html/404.html
 COPY lib/assets/503.html /etc/sozu/html/503.html