How to build the image with the Dockerfile?

[mrjones]

Hi there! I'm trying to build an image with the included Dockerfile but get an error.

First I tried just building like so:

git clone  https://github.com/orf/gping.git
cd gping
docker build -f ../Dockerfile . -t gping

DEPRECATED: The legacy builder is deprecated and will be removed in a future release.
            Install the buildx component to build images with BuildKit:
            https://docs.docker.com/go/buildx/

Sending build context to Docker daemon  1.372MB
Step 1/9 : FROM rust as builder
 ---> b13e19078869
Step 2/9 : WORKDIR /usr/src/gping
 ---> Using cache
 ---> 3ccc72e158e0
Step 3/9 : COPY src/ src/
COPY failed: file not found in build context or excluded by .dockerignore: stat src/: file does not exist

Noting the src directory it was looking for was in gping/src, I tried this:

git clone  https://github.com/orf/gping.git
cd gping/src
docker build -f ../Dockerfile . -t gping 
DEPRECATED: The legacy builder is deprecated and will be removed in a future release.
            Install the buildx component to build images with BuildKit:
            https://docs.docker.com/go/buildx/

Sending build context to Docker daemon  34.35kB
Step 1/9 : FROM rust as builder
 ---> b13e19078869
Step 2/9 : WORKDIR /usr/src/gping
 ---> Using cache
 ---> 3ccc72e158e0
Step 3/9 : COPY src/ src/
 ---> Using cache
 ---> e6be7f9dafba
Step 4/9 : COPY Cargo.* ./
 ---> Using cache
 ---> bf6903d44564
Step 5/9 : RUN cargo install --path .
 ---> Running in 3f5d388cb449
  Installing gping v1.12.0 (/usr/src/gping)
    Updating crates.io index
error: failed to compile `gping v1.12.0 (/usr/src/gping)`, intermediate artifacts can be found at `/usr/src/gping/target`

Caused by:
  failed to get `pinger` as a dependency of package `gping v1.12.0 (/usr/src/gping)`

Caused by:
  failed to load source for dependency `pinger`

Caused by:
  Unable to update /usr/src/pinger

Caused by:
  failed to read `/usr/src/pinger/Cargo.toml`

Caused by:
  No such file or directory (os error 2)
The command '/bin/sh -c cargo install --path .' returned a non-zero code: 101

[Tom Forbes]

Hey, I forgot about the Dockerfile. It’s not been updated and no longer works. If you’re up for fixing that I’m happy to accept a pull request, otherwise I will probably just remove it.

[mrjones]

I might could take a crack at a PR for a fix! I've never used rust - can you quickly enumerate the steps needed to compile outside of docker? I'll try and reproduce inside the container using the scaffold already in place.

[Tom Forbes]

Sure! To compile outside of docker you just need to run “cargo build —release” (or better yet, cargo install). There are likely other dockerfiles you can use as a reference: https://www.docker.com/blog/simplify-your-deployments-using-the-rust-official-image/ for example.

[mrjones]

I think i'll have to give up on this. I tried a number of different ways, but couldn't get it to compile w/i docker.

My last attempt I had this docker file:

FROM rust as builder
WORKDIR /usr/src/
COPY * ./ 
RUN cargo install --path .

FROM debian:buster-slim
RUN apt-get update && apt-get install -y inetutils-ping && rm -rf /var/lib/apt/lists/*
COPY --from=builder /usr/local/cargo/bin/gping /usr/local/bin/gping
ENTRYPOINT ["gping"]

and this is the error I got:

docker build  . -t gping 
DEPRECATED: The legacy builder is deprecated and will be removed in a future release.
            Install the buildx component to build images with BuildKit:
            https://docs.docker.com/go/buildx/

Sending build context to Docker daemon  1.372MB
Step 1/8 : FROM rust as builder
 ---> b13e19078869
Step 2/8 : WORKDIR /usr/src/
 ---> Using cache
 ---> d5fe8420c837
Step 3/8 : COPY * ./
 ---> 8429bc8d551f
Step 4/8 : RUN cargo install --path .
 ---> Running in f2f7ccb1ff30
  Installing pinger v0.11.0 (/usr/src)
    Updating crates.io index
 Downloading crates ...
  Downloaded thiserror-impl v1.0.40
  Downloaded thiserror v1.0.40
  Downloaded quote v1.0.28
  Downloaded aho-corasick v1.0.1
  Downloaded syn v2.0.18
  Downloaded regex v1.8.3
  Downloaded unicode-ident v1.0.9
  Downloaded lazy_static v1.4.0
  Downloaded proc-macro2 v1.0.59
  Downloaded memchr v2.5.0
  Downloaded anyhow v1.0.71
  Downloaded regex-syntax v0.7.2
   Compiling proc-macro2 v1.0.59
   Compiling quote v1.0.28
   Compiling unicode-ident v1.0.9
   Compiling memchr v2.5.0
   Compiling thiserror v1.0.40
   Compiling anyhow v1.0.71
   Compiling regex-syntax v0.7.2
   Compiling pinger v0.11.0 (/usr/src)
   Compiling lazy_static v1.4.0
error[E0433]: failed to resolve: use of undeclared crate or module `shadow_rs`
 --> build.rs:1:14
  |
1 | fn main() -> shadow_rs::SdResult<()> {
  |              ^^^^^^^^^ use of undeclared crate or module `shadow_rs`

error[E0433]: failed to resolve: use of undeclared crate or module `shadow_rs`
 --> build.rs:2:5
  |
2 |     shadow_rs::new()
  |     ^^^^^^^^^ use of undeclared crate or module `shadow_rs`

For more information about this error, try `rustc --explain E0433`.
error: could not compile `pinger` due to 2 previous errors
warning: build failed, waiting for other jobs to finish...
error: failed to compile `pinger v0.11.0 (/usr/src)`, intermediate artifacts can be found at `/usr/src/target`

[Tom Forbes]

This is closed by #319, you should now be able to do:

docker run ghcr.io/orf/gping:master (package here).

The next time I do a release it should be tagged properly, right now only master is available.