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feat: run containers as non-root user by default #547

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aa02836
feat: run containers as non-root user by default
constantinexanthos Apr 5, 2026
1a92751
chore: remove compiled binary from tracking
constantinexanthos Apr 5, 2026
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1 change: 1 addition & 0 deletions buildkit/convert.go
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Original file line number Diff line number Diff line change
Expand Up @@ -79,6 +79,7 @@ func ConvertPlanToLLB(plan *p.BuildPlan, opts ConvertPlanOptions) (*llb.State, *
WorkingDir: WorkingDir,
Entrypoint: []string{"/bin/bash", "-c"},
Cmd: []string{startCommand},
User: plan.Deploy.User,
},
}

Expand Down
17 changes: 16 additions & 1 deletion core/__snapshots__/TestGenerateBuildPlanForExamples_bun-pnpm_1.snap.json
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Expand Up @@ -19,7 +19,7 @@
},
"deploy": {
"base": {
"step": "packages:apt:runtime"
"step": "setup:user"
},
"inputs": [
{
Expand Down Expand Up @@ -51,6 +51,7 @@
}
],
"startCommand": "pnpm run start",
"user": "1001",
"variables": {
"CI": "true",
"NODE_ENV": "production",
Expand Down Expand Up @@ -173,6 +174,20 @@
}
],
"name": "packages:apt:runtime"
},
{
"commands": [
{
"cmd": "groupadd -g 1001 railpack \u0026\u0026 useradd -u 1001 -g railpack -m -s /bin/bash railpack \u0026\u0026 chown -R 1001:1001 /app",
"customName": "create non-root user"
}
],
"inputs": [
{
"step": "packages:apt:runtime"
}
],
"name": "setup:user"
}
]
}
17 changes: 16 additions & 1 deletion core/__snapshots__/TestGenerateBuildPlanForExamples_config-file_1.snap.json
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Original file line number Diff line number Diff line change
Expand Up @@ -19,7 +19,7 @@
},
"deploy": {
"base": {
"step": "packages:apt:runtime"
"step": "setup:user"
},
"inputs": [
{
Expand Down Expand Up @@ -51,6 +51,7 @@
}
],
"startCommand": "python --version \u0026\u0026 neofetch $HELLO",
"user": "1001",
"variables": {
"CI": "true",
"NODE_ENV": "production",
Expand Down Expand Up @@ -193,6 +194,20 @@
}
],
"name": "packages:apt:runtime"
},
{
"commands": [
{
"cmd": "groupadd -g 1001 railpack \u0026\u0026 useradd -u 1001 -g railpack -m -s /bin/bash railpack \u0026\u0026 chown -R 1001:1001 /app",
"customName": "create non-root user"
}
],
"inputs": [
{
"step": "packages:apt:runtime"
}
],
"name": "setup:user"
}
]
}
19 changes: 17 additions & 2 deletions core/__snapshots__/TestGenerateBuildPlanForExamples_cpp-cmake_1.snap.json
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Original file line number Diff line number Diff line change
@@ -1,7 +1,7 @@
{
"deploy": {
"base": {
"image": "ghcr.io/railwayapp/railpack-runtime:mise-2026.3.17"
"step": "setup:user"
},
"inputs": [
{
Expand All @@ -11,7 +11,8 @@
"step": "build"
}
],
"startCommand": "/build/cpp-cmake"
"startCommand": "/build/cpp-cmake",
"user": "1001"
},
"steps": [
{
Expand Down Expand Up @@ -73,6 +74,20 @@
"secrets": [
"*"
]
},
{
"commands": [
{
"cmd": "groupadd -g 1001 railpack \u0026\u0026 useradd -u 1001 -g railpack -m -s /bin/bash railpack \u0026\u0026 chown -R 1001:1001 /app",
"customName": "create non-root user"
}
],
"inputs": [
{
"image": "ghcr.io/railwayapp/railpack-runtime:mise-2026.3.17"
}
],
"name": "setup:user"
}
]
}
19 changes: 17 additions & 2 deletions core/__snapshots__/TestGenerateBuildPlanForExamples_cpp-meson_1.snap.json
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Original file line number Diff line number Diff line change
@@ -1,7 +1,7 @@
{
"deploy": {
"base": {
"image": "ghcr.io/railwayapp/railpack-runtime:mise-2026.3.17"
"step": "setup:user"
},
"inputs": [
{
Expand All @@ -11,7 +11,8 @@
"step": "build"
}
],
"startCommand": "/build/cpp-meson"
"startCommand": "/build/cpp-meson",
"user": "1001"
},
"steps": [
{
Expand Down Expand Up @@ -73,6 +74,20 @@
"secrets": [
"*"
]
},
{
"commands": [
{
"cmd": "groupadd -g 1001 railpack \u0026\u0026 useradd -u 1001 -g railpack -m -s /bin/bash railpack \u0026\u0026 chown -R 1001:1001 /app",
"customName": "create non-root user"
}
],
"inputs": [
{
"image": "ghcr.io/railwayapp/railpack-runtime:mise-2026.3.17"
}
],
"name": "setup:user"
}
]
}
19 changes: 17 additions & 2 deletions core/__snapshots__/TestGenerateBuildPlanForExamples_deno-2_1.snap.json
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Original file line number Diff line number Diff line change
@@ -1,7 +1,7 @@
{
"deploy": {
"base": {
"image": "ghcr.io/railwayapp/railpack-runtime:mise-2026.3.17"
"step": "setup:user"
},
"inputs": [
{
Expand All @@ -22,7 +22,8 @@
"step": "build"
}
],
"startCommand": "deno run --allow-all main.ts"
"startCommand": "deno run --allow-all main.ts",
"user": "1001"
},
"steps": [
{
Expand Down Expand Up @@ -78,6 +79,20 @@
"secrets": [
"*"
]
},
{
"commands": [
{
"cmd": "groupadd -g 1001 railpack \u0026\u0026 useradd -u 1001 -g railpack -m -s /bin/bash railpack \u0026\u0026 chown -R 1001:1001 /app",
"customName": "create non-root user"
}
],
"inputs": [
{
"image": "ghcr.io/railwayapp/railpack-runtime:mise-2026.3.17"
}
],
"name": "setup:user"
}
]
}
19 changes: 17 additions & 2 deletions core/__snapshots__/TestGenerateBuildPlanForExamples_dockerignore_1.snap.json
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Original file line number Diff line number Diff line change
@@ -1,7 +1,7 @@
{
"deploy": {
"base": {
"image": "ghcr.io/railwayapp/railpack-runtime:mise-2026.3.17"
"step": "setup:user"
},
"inputs": [
{
Expand All @@ -11,7 +11,8 @@
"step": "build"
}
],
"startCommand": "sh start.sh"
"startCommand": "sh start.sh",
"user": "1001"
},
"steps": [
{
Expand Down Expand Up @@ -60,6 +61,20 @@
"secrets": [
"*"
]
},
{
"commands": [
{
"cmd": "groupadd -g 1001 railpack \u0026\u0026 useradd -u 1001 -g railpack -m -s /bin/bash railpack \u0026\u0026 chown -R 1001:1001 /app",
"customName": "create non-root user"
}
],
"inputs": [
{
"image": "ghcr.io/railwayapp/railpack-runtime:mise-2026.3.17"
}
],
"name": "setup:user"
}
]
}
17 changes: 16 additions & 1 deletion core/__snapshots__/TestGenerateBuildPlanForExamples_dotnet-api_1.snap.json
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Original file line number Diff line number Diff line change
Expand Up @@ -11,7 +11,7 @@
},
"deploy": {
"base": {
"step": "packages:apt:runtime"
"step": "setup:user"
},
"inputs": [
{
Expand All @@ -28,6 +28,7 @@
}
],
"startCommand": "ASPNETCORE_URLS=http://0.0.0.0:${PORT:-3000} ./out/csharp-api",
"user": "1001",
"variables": {
"ASPNETCORE_CONTENTROOT": "/app/out",
"ASPNETCORE_ENVIRONMENT": "Production",
Expand Down Expand Up @@ -157,6 +158,20 @@
}
],
"name": "packages:apt:runtime"
},
{
"commands": [
{
"cmd": "groupadd -g 1001 railpack \u0026\u0026 useradd -u 1001 -g railpack -m -s /bin/bash railpack \u0026\u0026 chown -R 1001:1001 /app",
"customName": "create non-root user"
}
],
"inputs": [
{
"step": "packages:apt:runtime"
}
],
"name": "setup:user"
}
]
}
17 changes: 16 additions & 1 deletion core/__snapshots__/TestGenerateBuildPlanForExamples_dotnet-cli_1.snap.json
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Original file line number Diff line number Diff line change
Expand Up @@ -11,7 +11,7 @@
},
"deploy": {
"base": {
"step": "packages:apt:runtime"
"step": "setup:user"
},
"inputs": [
{
Expand All @@ -28,6 +28,7 @@
}
],
"startCommand": "ASPNETCORE_URLS=http://0.0.0.0:${PORT:-3000} ./out/csharp-cli",
"user": "1001",
"variables": {
"ASPNETCORE_CONTENTROOT": "/app/out",
"ASPNETCORE_ENVIRONMENT": "Production",
Expand Down Expand Up @@ -157,6 +158,20 @@
}
],
"name": "packages:apt:runtime"
},
{
"commands": [
{
"cmd": "groupadd -g 1001 railpack \u0026\u0026 useradd -u 1001 -g railpack -m -s /bin/bash railpack \u0026\u0026 chown -R 1001:1001 /app",
"customName": "create non-root user"
}
],
"inputs": [
{
"step": "packages:apt:runtime"
}
],
"name": "setup:user"
}
]
}
17 changes: 16 additions & 1 deletion core/__snapshots__/TestGenerateBuildPlanForExamples_elixir-ecto_1.snap.json
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Original file line number Diff line number Diff line change
@@ -1,7 +1,7 @@
{
"deploy": {
"base": {
"image": "ghcr.io/railwayapp/railpack-runtime:mise-2026.3.17"
"step": "setup:user"
},
"inputs": [
{
Expand All @@ -12,6 +12,7 @@
}
],
"startCommand": "/app/_build/prod/rel/friends/bin/friends start",
"user": "1001",
"variables": {
"ELIXIR_ERL_OPTIONS": "+fnu",
"LANG": "en_US.UTF-8",
Expand Down Expand Up @@ -163,6 +164,20 @@
"MIX_ENV": "prod",
"MIX_HOME": "/root/.mix"
}
},
{
"commands": [
{
"cmd": "groupadd -g 1001 railpack \u0026\u0026 useradd -u 1001 -g railpack -m -s /bin/bash railpack \u0026\u0026 chown -R 1001:1001 /app",
"customName": "create non-root user"
}
],
"inputs": [
{
"image": "ghcr.io/railwayapp/railpack-runtime:mise-2026.3.17"
}
],
"name": "setup:user"
}
]
}
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