diff --git a/Sources/containertool/Extensions/RegistryClient+publish.swift b/Sources/containertool/Extensions/RegistryClient+publish.swift
index d14434c..84b5f50 100644
--- a/Sources/containertool/Extensions/RegistryClient+publish.swift
+++ b/Sources/containertool/Extensions/RegistryClient+publish.swift
@@ -29,6 +29,7 @@ func publishContainerImage<Source: ImageSource, Destination: ImageDestination>(
     os: String,
     entrypoint: String?,
     cmd: [String],
+    additionalEnv: [String],
     resources: [String],
     tag: String?,
     verbose: Bool,
@@ -128,6 +129,13 @@ func publishContainerImage<Source: ImageSource, Destination: ImageDestination>(
     inheritedConfiguration.Cmd = cmd
     inheritedConfiguration.WorkingDir = "/"
 
+    if var env = inheritedConfiguration.Env {
+        env.append(contentsOf: additionalEnv)
+        inheritedConfiguration.Env = env
+    } else {
+        inheritedConfiguration.Env = additionalEnv
+    }
+
     let configuration = ImageConfiguration(
         created: timestamp,
         architecture: architecture,
diff --git a/Sources/containertool/containertool.swift b/Sources/containertool/containertool.swift
index 6733c66..9328ba2 100644
--- a/Sources/containertool/containertool.swift
+++ b/Sources/containertool/containertool.swift
@@ -68,6 +68,9 @@ enum AllowHTTP: String, ExpressibleByArgument, CaseIterable { case source, desti
         @Option(help: "Entrypoint process")
         var entrypoint: String?
 
+        @Option(parsing: .singleValue, help: "Additional environment variables to set in the container")
+        var env: [String] = []
+
         @Option(parsing: .remaining, help: "Default arguments to pass to the entrypoint process")
         var cmd: [String] = []
     }
@@ -230,6 +233,7 @@ enum AllowHTTP: String, ExpressibleByArgument, CaseIterable { case source, desti
             os: os,
             entrypoint: imageConfigurationOptions.entrypoint,
             cmd: imageConfigurationOptions.cmd,
+            additionalEnv: imageConfigurationOptions.env,
             resources: imageBuildOptions.resources,
             tag: repositoryOptions.tag,
             verbose: verbose,