Pin dependencies

Author: renovate[bot]

.circleci/config.yml

@@ -2,7 +2,7 @@ version: 2
 jobs:
   app:
     docker:
-      - image: cimg/go:1.23
+      - image: cimg/go:1.23@sha256:d89753cdb9f31e48c3a91aee6e73afcb23ad7e44abf7088491d8a9f002a71b67
 
     steps:
       - checkout
@@ -25,7 +25,7 @@ jobs:
 
   publish-github-release:
     docker:
-      - image: cimg/go:1.23
+      - image: cimg/go:1.23@sha256:d89753cdb9f31e48c3a91aee6e73afcb23ad7e44abf7088491d8a9f002a71b67
     steps:
       - attach_workspace:
           at: .

Dockerfile

@@ -1,4 +1,4 @@
-FROM golang:1.23-alpine AS build
+FROM golang:1.23-alpine@sha256:c23339199a08b0e12032856908589a6d41a0dab141b8b3b21f156fc571a3f1d3 AS build
 WORKDIR /go/src/github.com/RoboCup-SSL/ssl-simulation-controller
 COPY go.mod go.mod
 COPY go.sum go.sum
@@ -8,7 +8,7 @@ COPY internal internal
 RUN go install ./...
 
 # Start fresh from a smaller image
-FROM alpine:3.21
+FROM alpine:3.21@sha256:56fa17d2a7e7f168a043a2712e63aed1f8543aeafdcee47c58dcffe38ed51099
 COPY --from=build /go/bin/ssl-simulation-controller /app/ssl-simulation-controller
 USER 1000
 ENTRYPOINT ["/app/ssl-simulation-controller"]