Add Amazon Linux 2 builder image

[ewbankkit]

Closes #6.

$ make image_al2
docker build --file Dockerfile.al2 --tag rust:1.45.2-amazonlinux2.0.20200722.0 .
Sending build context to Docker daemon  109.6kB
Step 1/5 : FROM amazonlinux:2.0.20200722.0
2.0.20200722.0: Pulling from library/amazonlinux
37373184fe69: Pull complete 
Digest: sha256:2c99363fc74d3a39f02365b964e73cceb2b2524c00e9977e16680156e2f79ee8
Status: Downloaded newer image for amazonlinux:2.0.20200722.0
 ---> ba2cc467a2bc
Step 2/5 : LABEL maintainer="Kit Ewbank <Kit_Ewbank@hotmail.com>"
 ---> Running in 66a06cafa558
Removing intermediate container 66a06cafa558
 ---> c19e3a0de36d
Step 3/5 : ENV RUSTUP_HOME=/usr/local/rustup     CARGO_HOME=/usr/local/cargo     PATH=/usr/local/cargo/bin:$PATH     RUST_VERSION=1.45.2
 ---> Running in 4690c3c2cb6b
Removing intermediate container 4690c3c2cb6b
 ---> f6b2124d1ff1
Step 4/5 : RUN curl https://sh.rustup.rs -sSf | sh -s -- --no-modify-path --profile minimal --default-toolchain $RUST_VERSION -y;     chmod -R a+w $RUSTUP_HOME $CARGO_HOME;     rustup --version;     cargo --version;     rustc --version;
 ---> Running in 847261dfb5c5
info: downloading installer
info: profile set to 'minimal'
info: default host triple is x86_64-unknown-linux-gnu
info: syncing channel updates for '1.45.2-x86_64-unknown-linux-gnu'
info: latest update on 2020-08-03, rust version 1.45.2 (d3fb005a3 2020-07-31)
info: downloading component 'cargo'
info: downloading component 'rust-std'
info: downloading component 'rustc'
info: installing component 'cargo'
info: Defaulting to 500.0 MiB unpack ram
info: installing component 'rust-std'
info: installing component 'rustc'

info: default toolchain set to '1.45.2'
  1.45.2 installed - rustc 1.45.2 (d3fb005a3 2020-07-31)


Rust is installed now. Great!

To get started you need Cargo's bin directory (/usr/local/cargo/bin) in your 
PATH
environment variable.

To configure your current shell run source /usr/local/cargo/env
rustup 1.22.1 (b01adbbc3 2020-07-08)
cargo 1.45.1 (f242df6ed 2020-07-22)
rustc 1.45.2 (d3fb005a3 2020-07-31)
Removing intermediate container 847261dfb5c5
 ---> 0a8ccc44c5e2
Step 5/5 : WORKDIR /volume
 ---> Running in b458859ad548
Removing intermediate container b458859ad548
 ---> dec77cbebf9d
Successfully built dec77cbebf9d
Successfully tagged rust:1.45.2-amazonlinux2.0.20200722.0
docker tag rust:1.45.2-amazonlinux2.0.20200722.0 ewbankkit/rust-amazonlinux:1.45.2-2.0.20200722.0
$ make push_al2
docker build --file Dockerfile.al2 --tag rust:1.45.2-amazonlinux2.0.20200722.0 .
Sending build context to Docker daemon  109.6kB
Step 1/5 : FROM amazonlinux:2.0.20200722.0
 ---> ba2cc467a2bc
Step 2/5 : LABEL maintainer="Kit Ewbank <Kit_Ewbank@hotmail.com>"
 ---> Using cache
 ---> c19e3a0de36d
Step 3/5 : ENV RUSTUP_HOME=/usr/local/rustup     CARGO_HOME=/usr/local/cargo     PATH=/usr/local/cargo/bin:$PATH     RUST_VERSION=1.45.2
 ---> Using cache
 ---> f6b2124d1ff1
Step 4/5 : RUN curl https://sh.rustup.rs -sSf | sh -s -- --no-modify-path --profile minimal --default-toolchain $RUST_VERSION -y;     chmod -R a+w $RUSTUP_HOME $CARGO_HOME;     rustup --version;     cargo --version;     rustc --version;
 ---> Using cache
 ---> 0a8ccc44c5e2
Step 5/5 : WORKDIR /volume
 ---> Using cache
 ---> dec77cbebf9d
Successfully built dec77cbebf9d
Successfully tagged rust:1.45.2-amazonlinux2.0.20200722.0
docker tag rust:1.45.2-amazonlinux2.0.20200722.0 ewbankkit/rust-amazonlinux:1.45.2-2.0.20200722.0
docker push ewbankkit/rust-amazonlinux:1.45.2-2.0.20200722.0
The push refers to repository [docker.io/ewbankkit/rust-amazonlinux]
46caf8a6ddd5: Pushed 
6528b9020b9a: Pushed 
50c3cd231426: Mounted from library/amazonlinux 
1.45.2-2.0.20200722.0: digest: sha256:bc5636b1ada09a0f060a1e41952a6b562b4f33253c69fe274dedc7eea5731ce0 size: 949