feat: integration tests for transforms

Adds integration tests. Depends on testcontainers/testcontainers-go#2170 which I've added using a replace directive to enable testing/reviewing. I will remove it as soon as I can get the upstream PR merged.

backend/go.mod

@@ -11,6 +11,7 @@ require (
 	github.com/carlmjohnson/requests v0.23.5
 	github.com/cloudhut/common v0.10.0
 	github.com/cloudhut/connect-client v0.0.0-20240122153328-02a3103805d8
+	github.com/davecgh/go-spew v1.1.1
 	github.com/docker/go-connections v0.5.0
 	github.com/dop251/goja v0.0.0-20231027120936-b396bb4c349d
 	github.com/getkin/kin-openapi v0.122.0
@@ -22,7 +23,7 @@ require (
 	github.com/golang/mock v1.6.0
 	github.com/golang/protobuf v1.5.3
 	github.com/google/go-cmp v0.6.0
-	github.com/google/uuid v1.5.0
+	github.com/google/uuid v1.6.0
 	github.com/gorilla/schema v1.2.1
 	github.com/gorilla/websocket v1.5.1
 	github.com/grpc-ecosystem/grpc-gateway/v2 v2.19.0
@@ -65,6 +66,7 @@ require (
 require (
 	dario.cat/mergo v1.0.0 // indirect
 	github.com/Azure/go-ansiterm v0.0.0-20230124172434-306776ec8161 // indirect
+	github.com/Masterminds/semver/v3 v3.2.1 // indirect
 	github.com/Microsoft/go-winio v0.6.1 // indirect
 	github.com/Microsoft/hcsshim v0.11.4 // indirect
 	github.com/ProtonMail/go-crypto v0.0.0-20230923063757-afb1ddc0824c // indirect
@@ -76,26 +78,27 @@ require (
 	github.com/cespare/xxhash/v2 v2.2.0 // indirect
 	github.com/cilium/ebpf v0.12.3 // indirect
 	github.com/cloudflare/circl v1.3.7 // indirect
-	github.com/containerd/containerd v1.7.11 // indirect
+	github.com/containerd/containerd v1.7.12 // indirect
 	github.com/containerd/log v0.1.0 // indirect
 	github.com/cosiner/argv v0.1.0 // indirect
 	github.com/cpuguy83/dockercfg v0.3.1 // indirect
 	github.com/cpuguy83/go-md2man/v2 v2.0.3 // indirect
 	github.com/cyphar/filepath-securejoin v0.2.4 // indirect
-	github.com/davecgh/go-spew v1.1.1 // indirect
 	github.com/decred/dcrd/dcrec/secp256k1/v4 v4.2.0 // indirect
 	github.com/derekparker/trie v0.0.0-20230829180723-39f4de51ef7d // indirect
 	github.com/distribution/reference v0.5.0 // indirect
 	github.com/dlclark/regexp2 v1.10.0 // indirect
-	github.com/docker/distribution v2.8.3+incompatible // indirect
-	github.com/docker/docker v24.0.7+incompatible // indirect
+	github.com/docker/docker v25.0.1+incompatible // indirect
 	github.com/docker/go-units v0.5.0 // indirect
 	github.com/emirpasic/gods v1.18.1 // indirect
+	github.com/felixge/httpsnoop v1.0.3 // indirect
 	github.com/fsnotify/fsnotify v1.7.0 // indirect
 	github.com/go-delve/delve v1.22.0 // indirect
 	github.com/go-delve/gore v0.11.7 // indirect
 	github.com/go-delve/liner v1.2.3-0.20220127212407-d32d89dd2a5d // indirect
 	github.com/go-git/gcfg v1.5.1-0.20230307220236-3a3c6141e376 // indirect
+	github.com/go-logr/logr v1.2.4 // indirect
+	github.com/go-logr/stdr v1.2.2 // indirect
 	github.com/go-ole/go-ole v1.3.0 // indirect
 	github.com/go-openapi/jsonpointer v0.20.2 // indirect
 	github.com/go-openapi/swag v0.22.7 // indirect
@@ -139,14 +142,14 @@ require (
 	github.com/mitchellh/reflectwalk v1.0.2 // indirect
 	github.com/moby/patternmatcher v0.6.0 // indirect
 	github.com/moby/sys/sequential v0.5.0 // indirect
+	github.com/moby/sys/user v0.1.0 // indirect
 	github.com/moby/term v0.5.0 // indirect
 	github.com/modern-go/concurrent v0.0.0-20180306012644-bacd9c7ef1dd // indirect
 	github.com/modern-go/reflect2 v1.0.2 // indirect
 	github.com/mohae/deepcopy v0.0.0-20170929034955-c48cc78d4826 // indirect
 	github.com/morikuni/aec v1.0.0 // indirect
 	github.com/opencontainers/go-digest v1.0.0 // indirect
 	github.com/opencontainers/image-spec v1.1.0-rc5 // indirect
-	github.com/opencontainers/runc v1.1.11 // indirect
 	github.com/perimeterx/marshmallow v1.1.5 // indirect
 	github.com/pierrec/lz4/v4 v4.1.19 // indirect
 	github.com/pjbgf/sha1cd v0.3.0 // indirect
@@ -176,6 +179,10 @@ require (
 	github.com/xanzy/ssh-agent v0.3.3 // indirect
 	github.com/yusufpapurcu/wmi v1.2.3 // indirect
 	go.starlark.net v0.0.0-20240123142251-f86470692795 // indirect
+	go.opentelemetry.io/contrib/instrumentation/net/http/otelhttp v0.45.0 // indirect
+	go.opentelemetry.io/otel v1.19.0 // indirect
+	go.opentelemetry.io/otel/metric v1.19.0 // indirect
+	go.opentelemetry.io/otel/trace v1.19.0 // indirect
 	go.uber.org/multierr v1.11.0 // indirect
 	golang.org/x/arch v0.7.0 // indirect
 	golang.org/x/crypto v0.18.0 // indirect
@@ -188,3 +195,8 @@ require (
 	gopkg.in/yaml.v2 v2.4.0 // indirect
 	gopkg.in/yaml.v3 v3.0.1 // indirect
 )
+
+replace (
+	github.com/testcontainers/testcontainers-go v0.27.0 => github.com/gene-redpanda/testcontainers-go v0.27.1-0.20240126201417-2ce7ff79ca84
+	github.com/testcontainers/testcontainers-go/modules/redpanda v0.27.1-0.20240112110335-2309c4ecaf2f => github.com/gene-redpanda/testcontainers-go/modules/redpanda v0.27.1-0.20240126201417-2ce7ff79ca84
+)