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merged 2 commits into from
Dec 28, 2021
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examples: avoid hard-coding x86_64-linux #8

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examples: avoid hard-coding x86_64-linux
AkihiroSuda Dec 28, 2021
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typo
AkihiroSuda Dec 28, 2021
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2 changes: 1 addition & 1 deletion examples/golang-httpserver-flake/README.md
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Expand Up @@ -4,7 +4,7 @@

```bash
export DOCKER_BUILDKIT=1
docker build -t golang-httpserver -f default.nix .
docker build -t golang-httpserver -f flake.nix .
```

```
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16 changes: 16 additions & 0 deletions examples/golang-httpserver-flake/flake.lock
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42 changes: 22 additions & 20 deletions examples/golang-httpserver-flake/flake.nix
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@@ -1,25 +1,27 @@
# syntax = ghcr.io/akihirosuda/buildkit-nix:v0.0.2@sha256:ad13161464806242fd69dbf520bd70a15211b557d37f61178a4bf8e1fd39f1f2

{
outputs = { self, nixpkgs }:
let
pkgs = nixpkgs.legacyPackages.x86_64-linux;
# See https://ryantm.github.io/nixpkgs/languages-frameworks/go/
app = pkgs.buildGoModule {
name = "golang-httpserver";
src = ./.;
vendorSha256 = "FdDIvZrvGFHk7aqjLtJsiqsIHM6lob9iNPLd7ITau7o=";
runVend = true;
};
in {
defaultPackage.x86_64-linux = pkgs.dockerTools.buildImage {
name = "golang-httpserver";
tag = "nix";
contents = [ pkgs.bash pkgs.coreutils app ];
config = {
Cmd = [ "golang-httpserver" ];
ExposedPorts = { "80/tcp" = { }; };
inputs.flake-utils.url = "github:numtide/flake-utils";
outputs = { self, nixpkgs, flake-utils }:
flake-utils.lib.eachDefaultSystem (system:
let
pkgs = nixpkgs.legacyPackages.${system};
# See https://ryantm.github.io/nixpkgs/languages-frameworks/go/
app = pkgs.buildGoModule {
name = "golang-httpserver";
src = ./.;
vendorSha256 = "FdDIvZrvGFHk7aqjLtJsiqsIHM6lob9iNPLd7ITau7o=";
runVend = true;
};
};
};
in rec {
defaultPackage = pkgs.dockerTools.buildImage {
name = "golang-httpserver";
tag = "nix";
contents = [ pkgs.bash pkgs.coreutils app ];
config = {
Cmd = [ "golang-httpserver" ];
ExposedPorts = { "80/tcp" = { }; };
};
};
});
}
16 changes: 16 additions & 0 deletions examples/nginx-flake/flake.lock
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90 changes: 46 additions & 44 deletions examples/nginx-flake/flake.nix
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@@ -1,50 +1,52 @@
# syntax = ghcr.io/akihirosuda/buildkit-nix:v0.0.2@sha256:ad13161464806242fd69dbf520bd70a15211b557d37f61178a4bf8e1fd39f1f2

{
outputs = { self, nixpkgs }:
let
pkgs = nixpkgs.legacyPackages.x86_64-linux;
entrypoint = pkgs.writeScript "docker-entrypoint.sh" ''
#!${pkgs.stdenv.shell}
set -eux -o pipefail
# Create "nogroup" group
if ! grep -q ^nogroup /etc/group; then
# dereference symlink (/etc/group -> /nix/....) to support `docker run --read-only`
cp -aL /etc/group /etc/group.real
echo nogroup:x:65534: >>/etc/group.real
rm -f /etc/group
mv /etc/group.real /etc/group
fi
# Initialize /var
mkdir -p /var/log/nginx /var/cache/nginx/client_body
exec nginx -g "daemon off; error_log /dev/stderr debug;"
'';
in with pkgs; {
defaultPackage.x86_64-linux = dockerTools.buildImage {
name = "nginx";
tag = "nix";
contents = [
# fakeNss creates /etc/passwd and /etc/group (https://github.com/NixOS/nixpkgs/blob/e548124f/pkgs/build-support/docker/default.nix#L741-L763)
dockerTools.fakeNss
bash
coreutils
gnugrep
nginx
(writeTextDir "${pkgs.nginx}/html/index.html" ''
<html><body>hello nix</body></html>
'')
];
# runAsRoot cannot be used because it depends on KVM.
# extraCommands can be used but often fails unless running everything as the root.
# https://discourse.nixos.org/t/dockertools-buildimage-and-user-writable-tmp/5397
config = {
Cmd = [ entrypoint ];
ExposedPorts = { "80/tcp" = { }; };
Volumes = {
"/etc" = { };
"/var" = { };
inputs.flake-utils.url = "github:numtide/flake-utils";
outputs = { self, nixpkgs, flake-utils }:
flake-utils.lib.eachDefaultSystem (system:
let
pkgs = nixpkgs.legacyPackages.${system};
entrypoint = pkgs.writeScript "docker-entrypoint.sh" ''
#!${pkgs.stdenv.shell}
set -eux -o pipefail
# Create "nogroup" group
if ! grep -q ^nogroup /etc/group; then
# dereference symlink (/etc/group -> /nix/....) to support `docker run --read-only`
cp -aL /etc/group /etc/group.real
echo nogroup:x:65534: >>/etc/group.real
rm -f /etc/group
mv /etc/group.real /etc/group
fi
# Initialize /var
mkdir -p /var/log/nginx /var/cache/nginx/client_body
exec nginx -g "daemon off; error_log /dev/stderr debug;"
'';
in with pkgs; rec {
defaultPackage = dockerTools.buildImage {
name = "nginx";
tag = "nix";
contents = [
# fakeNss creates /etc/passwd and /etc/group (https://github.com/NixOS/nixpkgs/blob/e548124f/pkgs/build-support/docker/default.nix#L741-L763)
dockerTools.fakeNss
bash
coreutils
gnugrep
nginx
(writeTextDir "${pkgs.nginx}/html/index.html" ''
<html><body>hello nix</body></html>
'')
];
# runAsRoot cannot be used because it depends on KVM.
# extraCommands can be used but often fails unless running everything as the root.
# https://discourse.nixos.org/t/dockertools-buildimage-and-user-writable-tmp/5397
config = {
Cmd = [ entrypoint ];
ExposedPorts = { "80/tcp" = { }; };
Volumes = {
"/etc" = { };
"/var" = { };
};
};
};
};
};
});
}