"git": executable file not found in $PATH

[air3ijai]

I'm trying to follow the guide Generating Common Contracts using Docker image

docker run --rm \
  -v ./web3-data:/data \
  gochain/web3 \
  generate contract erc20 --name "Test Tokens" --symbol TEST

But get the error

2024/05/17 09:29:12 Cloning OpenZeppelin v4.6.0...
ERROR: Cloning finished with error: exec: "git": executable file not found in $PATH

And we can check that git executable is missing in the Docker image

# Check sh
docker run -it --entrypoint /bin/sh gochain/web3 -c "which sh"
/bin/sh

# Check git
docker run -it --entrypoint /bin/sh gochain/web3 -c "which git"

# Check interactively
docker run -it --entrypoint /bin/sh gochain/web3
/app # which git
/app #
/app # git
/bin/sh: git: not found

[air3ijai]

Docker builds probably are done via Dockerfile, we can fix that by updating

- RUN apk add --no-cache ca-certificates
+ RUN apk add --no-cache ca-certificates git

[air3ijai]

We can use a wrapper Dockerfile as a workaround

FROM gochain/web3
RUN apk add --no-cache git

# Build
docker build -t web3-git .

# Size
docker images -a | grep web3
web3-git       latest   0a9e9c666a5f   44 seconds ago   58MB
gochain/web3   latest   88dded04d5cb   5 months ago     42MB

# Check
docker run -it --entrypoint /bin/sh web3-git -c "which git"
/usr/bin/git

But there is an issue that web3 will clone repository into the local /app directory and will write contract in the same location. In that way we can't mount /app, unless we will copy web3 binary

# Copy binary
docker run --rm \
  -v ./web3-data:/app-data \
  --entrypoint /bin/sh \
  web3-git \
  -c "cp /app/web3 /app-data"

# Generate contract
docker run --rm \
  -v ./web3-data:/app \
  web3-git \
  generate contract erc20 --name "Test Tokens" --symbol TEST

[air3ijai]

Looks like we can't build contract inside Docker image as we rely to Docker for that

docker run --rm \
  -v ./web3-data:/app \
  web3-git \
  contract build TEST.sol

ERROR: Failed to compile "TEST_flatten.sol": solc: exec: "docker": executable file not found in $PATH

[treeder]

To run those commands inside docker, we'd have to have a docker-in-docker build, which we don't have.

Best to run it outside of docker if you can.

[air3ijai]

I'm not so familiar with that, but can we create Docker images with solidity compiller?

Installing the Solidity Compiler - Docker

[treeder]

Ya, that's an option.